72000452 has 12 divisors (see below), whose sum is σ = 126060480. Its totient is φ = 35983176.

The previous prime is 72000449. The next prime is 72000479. The reversal of 72000452 is 25400027.

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, 13049 + ... + 17727.

It is an arithmetic number, because the mean of its divisors is an integer number (10505040).

Almost surely, 2^72000452 is an apocalyptic number.

It is an amenable number.

72000452 is a deficient number, since it is larger than the sum of its proper divisors (54060028).

72000452 is a wasteful number, since it uses less digits than its factorization.

72000452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8530 (or 8528 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 20.

The square root of 72000452 is about 8485.3080085522. The cubic root of 72000452 is about 416.0176351622.

Adding to 72000452 its reverse (25400027), we get a palindrome (97400479).

The spelling of 72000452 in words is "seventy-two million, four hundred fifty-two", and thus it is an aban number.