90475730 has 16 divisors (see below), whose sum is σ = 167258520. Its totient is φ = 35212032.

The previous prime is 90475703. The next prime is 90475747. The reversal of 90475730 is 3757409.

It can be written as a sum of positive squares in 4 ways, for example, as 65983129 + 24492601 = 8123^2 + 4949^2 .

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, 121895 + ... + 122634.

Almost surely, 2^90475730 is an apocalyptic number.

90475730 is a deficient number, since it is larger than the sum of its proper divisors (76782790).

90475730 is a wasteful number, since it uses less digits than its factorization.

90475730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244573.

The product of its (nonzero) digits is 26460, while the sum is 35.

The square root of 90475730 is about 9511.8731068071. The cubic root of 90475730 is about 448.9286943874.

The spelling of 90475730 in words is "ninety million, four hundred seventy-five thousand, seven hundred thirty".