90457828 has 12 divisors (see below), whose sum is σ = 159273520. Its totient is φ = 44951112.

The previous prime is 90457819. The next prime is 90457889. The reversal of 90457828 is 82875409.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68718 + ... + 70021.

Almost surely, 2^90457828 is an apocalyptic number.

It is an amenable number.

90457828 is a deficient number, since it is larger than the sum of its proper divisors (68815692).

90457828 is a wasteful number, since it uses less digits than its factorization.

90457828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138906 (or 138904 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 43.

The square root of 90457828 is about 9510.9320258322. The cubic root of 90457828 is about 448.8990833097.

The spelling of 90457828 in words is "ninety million, four hundred fifty-seven thousand, eight hundred twenty-eight".