90072494 has 16 divisors (see below), whose sum is σ = 143370000. Its totient is φ = 42294144.

The previous prime is 90072491. The next prime is 90072497. The reversal of 90072494 is 49427009.

It is an interprime number because it is at equal distance from previous prime (90072491) and next prime (90072497).

It is a super-2 number, since 2×90072494² = 16226108350760072, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90072491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14312 + ... + 19620.

It is an arithmetic number, because the mean of its divisors is an integer number (8960625).

Almost surely, 2^90072494 is an apocalyptic number.

90072494 is a deficient number, since it is larger than the sum of its proper divisors (53297506).

90072494 is a wasteful number, since it uses less digits than its factorization.

90072494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5827.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 90072494 is about 9490.6529806963. The cubic root of 90072494 is about 448.2607664213.

The spelling of 90072494 in words is "ninety million, seventy-two thousand, four hundred ninety-four".