87264441 has 24 divisors (see below), whose sum is σ = 140868000. Its totient is φ = 51595200.

The previous prime is 87264431. The next prime is 87264449. The reversal of 87264441 is 14446278.

87264441 is a `hidden beast` number, since 8 + 7 + 2 + 644 + 4 + 1 = 666.

It is not a de Polignac number, because 87264441 - 2⁵ = 87264409 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87264396 and 87264405.

It is not an unprimeable number, because it can be changed into a prime (87264449) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6691 + ... + 14808.

It is an arithmetic number, because the mean of its divisors is an integer number (5869500).

Almost surely, 2^87264441 is an apocalyptic number.

It is an amenable number.

87264441 is a deficient number, since it is larger than the sum of its proper divisors (53603559).

87264441 is a wasteful number, since it uses less digits than its factorization.

87264441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21557 (or 21554 counting only the distinct ones).

The product of its digits is 43008, while the sum is 36.

The square root of 87264441 is about 9341.5438231590. The cubic root of 87264441 is about 443.5532546850.

The spelling of 87264441 in words is "eighty-seven million, two hundred sixty-four thousand, four hundred forty-one".