87289892 has 6 divisors (see below), whose sum is σ = 152757318. Its totient is φ = 43644944.

The previous prime is 87289879. The next prime is 87289897. The reversal of 87289892 is 29898278.

It can be written as a sum of positive squares in only one way, i.e., 64096036 + 23193856 = 8006^2 + 4816^2 .

It is not an unprimeable number, because it can be changed into a prime (87289897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10911233 + ... + 10911240.

It is an arithmetic number, because the mean of its divisors is an integer number (25459553).

Almost surely, 2^87289892 is an apocalyptic number.

It is an amenable number.

87289892 is a deficient number, since it is larger than the sum of its proper divisors (65467426).

87289892 is a wasteful number, since it uses less digits than its factorization.

87289892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21822477 (or 21822475 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 53.

The square root of 87289892 is about 9342.9059719126. The cubic root of 87289892 is about 443.5963718144.

The spelling of 87289892 in words is "eighty-seven million, two hundred eighty-nine thousand, eight hundred ninety-two".