72526280 has 16 divisors (see below), whose sum is σ = 163184220. Its totient is φ = 29010496.

The previous prime is 72526277. The next prime is 72526297. The reversal of 72526280 is 8262527.

It can be written as a sum of positive squares in 2 ways, for example, as 67535524 + 4990756 = 8218^2 + 2234^2 .

It is a super-2 number, since 2×72526280² = 10520122581276800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 906539 + ... + 906618.

Almost surely, 2^72526280 is an apocalyptic number.

It is an amenable number.

72526280 is an abundant number, since it is smaller than the sum of its proper divisors (90657940).

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

72526280 is a wasteful number, since it uses less digits than its factorization.

72526280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1813168 (or 1813164 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 72526280 is about 8516.2362578782. The cubic root of 72526280 is about 417.0279220741.

The spelling of 72526280 in words is "seventy-two million, five hundred twenty-six thousand, two hundred eighty".