90072930 has 16 divisors (see below), whose sum is σ = 216175104. Its totient is φ = 24019440.

The previous prime is 90072929. The next prime is 90072947. The reversal of 90072930 is 3927009.

It is a super-2 number, since 2×90072930² = 16226265437569800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 3002431 = 90072930 / (9 + 0 + 0 + 7 + 2 + 9 + 3 + 0).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1501186 + ... + 1501245.

It is an arithmetic number, because the mean of its divisors is an integer number (13510944).

Almost surely, 2^90072930 is an apocalyptic number.

90072930 is an abundant number, since it is smaller than the sum of its proper divisors (126102174).

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

90072930 is a wasteful number, since it uses less digits than its factorization.

90072930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3002441.

The product of its (nonzero) digits is 3402, while the sum is 30.

The square root of 90072930 is about 9490.6759506370. The cubic root of 90072930 is about 448.2614896956.

Adding to 90072930 its reverse (3927009), we get a palindrome (93999939).

The spelling of 90072930 in words is "ninety million, seventy-two thousand, nine hundred thirty".