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87984414 = 23371371699
BaseRepresentation
bin1010011111010…
…00100100011110
320010120001221000
411033220210132
5140011000124
612421451130
72115566220
oct517504436
9203501830
1087984414
1145734aa1
1225570aa6
13152c76ab
14b984410
157ace6c9
hex53e891e

87984414 has 64 divisors (see below), whose sum is σ = 225216000. Its totient is φ = 24940224.

The previous prime is 87984397. The next prime is 87984419. The reversal of 87984414 is 41448978.

It is a nialpdrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 87984414.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87984419) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50937 + ... + 52635.

It is an arithmetic number, because the mean of its divisors is an integer number (3519000).

Almost surely, 287984414 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87984414, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112608000).

87984414 is an abundant number, since it is smaller than the sum of its proper divisors (137231586).

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

87984414 is a wasteful number, since it uses less digits than its factorization.

87984414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1854 (or 1848 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The square root of 87984414 is about 9380.0007462686. Note that the first 3 decimals coincide. The cubic root of 87984414 is about 444.7697567500.

The spelling of 87984414 in words is "eighty-seven million, nine hundred eighty-four thousand, four hundred fourteen".

Divisors: 1 2 3 6 7 9 14 18 21 27 42 54 63 126 137 189 274 378 411 822 959 1233 1699 1918 2466 2877 3398 3699 5097 5754 7398 8631 10194 11893 15291 17262 23786 25893 30582 35679 45873 51786 71358 91746 107037 214074 232763 321111 465526 642222 698289 1396578 1629341 2094867 3258682 4189734 4888023 6284601 9776046 12569202 14664069 29328138 43992207 87984414