90942028 has 24 divisors (see below), whose sum is σ = 165044880. Its totient is φ = 43794240.

The previous prime is 90942017. The next prime is 90942029. The reversal of 90942028 is 82024909.

It is a junction number, because it is equal to n+sod(n) for n = 90941984 and 90942002.

It is not an unprimeable number, because it can be changed into a prime (90942029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65550 + ... + 66922.

It is an arithmetic number, because the mean of its divisors is an integer number (6876870).

Almost surely, 2^90942028 is an apocalyptic number.

It is an amenable number.

90942028 is a deficient number, since it is larger than the sum of its proper divisors (74102852).

90942028 is a wasteful number, since it uses less digits than its factorization.

90942028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1977 (or 1975 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 90942028 is about 9536.3529716554. The cubic root of 90942028 is about 449.6986097097.

The spelling of 90942028 in words is "ninety million, nine hundred forty-two thousand, twenty-eight".