90745028 has 24 divisors (see below), whose sum is σ = 180774720. Its totient is φ = 39453920.

The previous prime is 90745021. The next prime is 90745037. The reversal of 90745028 is 82054709.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (90745021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43823 + ... + 45846.

It is an arithmetic number, because the mean of its divisors is an integer number (7532280).

Almost surely, 2^90745028 is an apocalyptic number.

It is an amenable number.

90745028 is a deficient number, since it is larger than the sum of its proper divisors (90029692).

90745028 is a wasteful number, since it uses less digits than its factorization.

90745028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89707 (or 89705 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 90745028 is about 9526.0184757327. The cubic root of 90745028 is about 449.3736603108.

The spelling of 90745028 in words is "ninety million, seven hundred forty-five thousand, twenty-eight".