87615252 has 36 divisors (see below), whose sum is σ = 226626400. Its totient is φ = 28525392.

The previous prime is 87615239. The next prime is 87615259. The reversal of 87615252 is 25251678.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87615259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26752 + ... + 29847.

Almost surely, 2^87615252 is an apocalyptic number.

It is an amenable number.

87615252 is an abundant number, since it is smaller than the sum of its proper divisors (139011148).

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

87615252 is a wasteful number, since it uses less digits than its factorization.

87615252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56652 (or 56647 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 87615252 is about 9360.3019182076. The cubic root of 87615252 is about 444.1468348049.

The spelling of 87615252 in words is "eighty-seven million, six hundred fifteen thousand, two hundred fifty-two".