87997752 has 40 divisors (see below), whose sum is σ = 246477000. Its totient is φ = 29332368.

The previous prime is 87997751. The next prime is 87997753. The reversal of 87997752 is 25779978.

It is an interprime number because it is at equal distance from previous prime (87997751) and next prime (87997753).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87997751) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 67252 + ... + 68547.

It is an arithmetic number, because the mean of its divisors is an integer number (6161925).

Almost surely, 2^87997752 is an apocalyptic number.

It is an amenable number.

87997752 is an abundant number, since it is smaller than the sum of its proper divisors (158479248).

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

87997752 is a wasteful number, since it uses less digits than its factorization.

87997752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135817 (or 135804 counting only the distinct ones).

The product of its digits is 2222640, while the sum is 54.

The square root of 87997752 is about 9380.7117000791. The cubic root of 87997752 is about 444.7922305761.

The spelling of 87997752 in words is "eighty-seven million, nine hundred ninety-seven thousand, seven hundred fifty-two".