90072452 has 12 divisors (see below), whose sum is σ = 158571840. Its totient is φ = 44766216.

The previous prime is 90072427. The next prime is 90072457. The reversal of 90072452 is 25427009.

It is a super-2 number, since 2×90072452² = 16226093218584608, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (90072457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66752 + ... + 68087.

It is an arithmetic number, because the mean of its divisors is an integer number (13214320).

Almost surely, 2^90072452 is an apocalyptic number.

It is an amenable number.

90072452 is a deficient number, since it is larger than the sum of its proper divisors (68499388).

90072452 is a wasteful number, since it uses less digits than its factorization.

90072452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135010 (or 135008 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 90072452 is about 9490.6507679927. The cubic root of 90072452 is about 448.2606967479.

The spelling of 90072452 in words is "ninety million, seventy-two thousand, four hundred fifty-two".