90160724 has 24 divisors (see below), whose sum is σ = 168797160. Its totient is φ = 41988096.

The previous prime is 90160717. The next prime is 90160727. The reversal of 90160724 is 42706109.

It can be written as a sum of positive squares in 4 ways, for example, as 32855824 + 57304900 = 5732^2 + 7570^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90160727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239 + ... + 13430.

It is an arithmetic number, because the mean of its divisors is an integer number (7033215).

Almost surely, 2^90160724 is an apocalyptic number.

It is an amenable number.

90160724 is a deficient number, since it is larger than the sum of its proper divisors (78636436).

90160724 is a wasteful number, since it uses less digits than its factorization.

90160724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13787 (or 13785 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 90160724 is about 9495.3001005761. The cubic root of 90160724 is about 448.4070824201.

The spelling of 90160724 in words is "ninety million, one hundred sixty thousand, seven hundred twenty-four".