7891264 has 28 divisors (see below), whose sum is σ = 16582644. Its totient is φ = 3713024.

The previous prime is 7891259. The next prime is 7891271. The reversal of 7891264 is 4621987.

It can be written as a sum of positive squares in 2 ways, for example, as 5953600 + 1937664 = 2440^2 + 1392^2 .

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2539 + ... + 4714.

Almost surely, 2^7891264 is an apocalyptic number.

It is an amenable number.

7891264 is an abundant number, since it is smaller than the sum of its proper divisors (8691380).

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

7891264 is a wasteful number, since it uses less digits than its factorization.

7891264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7282 (or 7272 counting only the distinct ones).

The product of its digits is 24192, while the sum is 37.

The square root of 7891264 is about 2809.1393699850. The cubic root of 7891264 is about 199.0897299946.

The spelling of 7891264 in words is "seven million, eight hundred ninety-one thousand, two hundred sixty-four".