90070372 has 12 divisors (see below), whose sum is σ = 180140800. Its totient is φ = 38601576.

The previous prime is 90070367. The next prime is 90070381. The reversal of 90070372 is 27307009.

It is a happy number.

90070372 is an admirable number.

It is a super-2 number, since 2×90070372² = 16225343824436768, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 3216799 = 90070372 / (9 + 0 + 0 + 7 + 0 + 3 + 7 + 2).

It is a self number, because there is not a number n which added to its sum of digits gives 90070372.

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, 1608372 + ... + 1608427.

Almost surely, 2^90070372 is an apocalyptic number.

It is an amenable number.

90070372 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

90070372 is a wasteful number, since it uses less digits than its factorization.

90070372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3216810 (or 3216808 counting only the distinct ones).

The product of its (nonzero) digits is 2646, while the sum is 28.

The square root of 90070372 is about 9490.5411858334. The cubic root of 90070372 is about 448.2572462315.

The spelling of 90070372 in words is "ninety million, seventy thousand, three hundred seventy-two".