90550028 has 12 divisors (see below), whose sum is σ = 158630640. Its totient is φ = 45226992.

The previous prime is 90550027. The next prime is 90550049. The reversal of 90550028 is 82005509.

It is not an unprimeable number, because it can be changed into a prime (90550027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7583 + ... + 15446.

It is an arithmetic number, because the mean of its divisors is an integer number (13219220).

Almost surely, 2^90550028 is an apocalyptic number.

It is an amenable number.

90550028 is a deficient number, since it is larger than the sum of its proper divisors (68080612).

90550028 is a wasteful number, since it uses less digits than its factorization.

90550028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24016 (or 24014 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 90550028 is about 9515.7778452421. Note that the first 3 decimals coincide. The cubic root of 90550028 is about 449.0515464058.

The spelling of 90550028 in words is "ninety million, five hundred fifty thousand, twenty-eight".