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102087456 = 2531997577
BaseRepresentation
bin1100001010110…
…11101100100000
321010002120122220
412011123230200
5202113244311
614044031040
72346505032
oct605335440
9233076586
10102087456
11526978a9
122a232480
13181c49a3
14d7b5c52
158e68206
hex615bb20

102087456 has 96 divisors (see below), whose sum is σ = 285485760. Its totient is φ = 31850496.

The previous prime is 102087449. The next prime is 102087463. The reversal of 102087456 is 654780201.

It is an interprime number because it is at equal distance from previous prime (102087449) and next prime (102087463).

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 176640 + ... + 177216.

It is an arithmetic number, because the mean of its divisors is an integer number (2973810).

Almost surely, 2102087456 is an apocalyptic number.

102087456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102087456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142742880).

102087456 is an abundant number, since it is smaller than the sum of its proper divisors (183398304).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102087456 is a wasteful number, since it uses less digits than its factorization.

102087456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706 (or 698 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 102087456 is about 10103.8337278481. The cubic root of 102087456 is about 467.3663716756.

The spelling of 102087456 in words is "one hundred two million, eighty-seven thousand, four hundred fifty-six".

Divisors: 1 2 3 4 6 8 12 16 19 24 32 38 48 57 76 96 97 114 152 194 228 291 304 388 456 577 582 608 776 912 1154 1164 1552 1731 1824 1843 2308 2328 3104 3462 3686 4616 4656 5529 6924 7372 9232 9312 10963 11058 13848 14744 18464 21926 22116 27696 29488 32889 43852 44232 55392 55969 58976 65778 87704 88464 111938 131556 167907 175408 176928 223876 263112 335814 350816 447752 526224 671628 895504 1052448 1063411 1343256 1791008 2126822 2686512 3190233 4253644 5373024 6380466 8507288 12760932 17014576 25521864 34029152 51043728 102087456