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87423102 = 23213477949
BaseRepresentation
bin1010011010111…
…11100001111110
320002111112221200
411031133201332
5134340014402
612401440330
72111040564
oct515374176
9202445850
1087423102
11453912a8
12253400a6
131515c060
14b879a34
157a1d21c
hex535f87e

87423102 has 48 divisors (see below), whose sum is σ = 208353600. Its totient is φ = 26323776.

The previous prime is 87423101. The next prime is 87423103. The reversal of 87423102 is 20132478.

It is an interprime number because it is at equal distance from previous prime (87423101) and next prime (87423103).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87423101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7024 + ... + 14972.

It is an arithmetic number, because the mean of its divisors is an integer number (4340700).

Almost surely, 287423102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87423102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104176800).

87423102 is an abundant number, since it is smaller than the sum of its proper divisors (120930498).

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

87423102 is a wasteful number, since it uses less digits than its factorization.

87423102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8017 (or 8014 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 87423102 is about 9350.0321924579. The cubic root of 87423102 is about 443.8219093410.

The spelling of 87423102 in words is "eighty-seven million, four hundred twenty-three thousand, one hundred two".

Divisors: 1 2 3 6 9 13 18 26 39 47 78 94 117 141 234 282 423 611 846 1222 1833 3666 5499 7949 10998 15898 23847 47694 71541 103337 143082 206674 310011 373603 620022 747206 930033 1120809 1860066 2241618 3362427 4856839 6724854 9713678 14570517 29141034 43711551 87423102