72508452 has 48 divisors (see below), whose sum is σ = 173638080. Its totient is φ = 23540608.

The previous prime is 72508441. The next prime is 72508453. The reversal of 72508452 is 25480527.

It is a super-2 number, since 2×72508452² = 10514951222872608, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72508453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109699 + ... + 110357.

It is an arithmetic number, because the mean of its divisors is an integer number (3617460).

Almost surely, 2^72508452 is an apocalyptic number.

It is an amenable number.

72508452 is an abundant number, since it is smaller than the sum of its proper divisors (101129628).

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

72508452 is a wasteful number, since it uses less digits than its factorization.

72508452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 892 (or 890 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 33.

The square root of 72508452 is about 8515.1894870285. The cubic root of 72508452 is about 416.9937487921.

Adding to 72508452 its reverse (25480527), we get a palindrome (97988979).

The spelling of 72508452 in words is "seventy-two million, five hundred eight thousand, four hundred fifty-two".