90160730 has 48 divisors (see below), whose sum is σ = 179693640. Its totient is φ = 32545920.

The previous prime is 90160727. The next prime is 90160747. The reversal of 90160730 is 3706109.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 34374769 + 55785961 = 5863^2 + 7469^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 90160730.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 325352 + ... + 325628.

Almost surely, 2^90160730 is an apocalyptic number.

90160730 is a deficient number, since it is larger than the sum of its proper divisors (89532910).

90160730 is a wasteful number, since it uses less digits than its factorization.

90160730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575 (or 564 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 26.

The square root of 90160730 is about 9495.3004165218. The cubic root of 90160730 is about 448.4070923669.

Adding to 90160730 its reverse (3706109), we get a palindrome (93866839).

The spelling of 90160730 in words is "ninety million, one hundred sixty thousand, seven hundred thirty".