87851732 has 6 divisors (see below), whose sum is σ = 153740538. Its totient is φ = 43925864.

The previous prime is 87851707. The next prime is 87851747. The reversal of 87851732 is 23715878.

It can be written as a sum of positive squares in only one way, i.e., 79637776 + 8213956 = 8924^2 + 2866^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 87851732.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10981463 + ... + 10981470.

It is an arithmetic number, because the mean of its divisors is an integer number (25623423).

Almost surely, 2^87851732 is an apocalyptic number.

It is an amenable number.

87851732 is a deficient number, since it is larger than the sum of its proper divisors (65888806).

87851732 is a wasteful number, since it uses less digits than its factorization.

87851732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21962937 (or 21962935 counting only the distinct ones).

The product of its digits is 94080, while the sum is 41.

The square root of 87851732 is about 9372.9254771389. The cubic root of 87851732 is about 444.5460708067.

The spelling of 87851732 in words is "eighty-seven million, eight hundred fifty-one thousand, seven hundred thirty-two".