90028055 has 16 divisors (see below), whose sum is σ = 116544960. Its totient is φ = 66367488.

The previous prime is 90028051. The next prime is 90028069. The reversal of 90028055 is 55082009.

It is a cyclic number.

It is not a de Polignac number, because 90028055 - 2² = 90028051 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90028051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63191 + ... + 64599.

It is an arithmetic number, because the mean of its divisors is an integer number (7284060).

Almost surely, 2^90028055 is an apocalyptic number.

90028055 is a deficient number, since it is larger than the sum of its proper divisors (26516905).

90028055 is a wasteful number, since it uses less digits than its factorization.

90028055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2410.

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

The square root of 90028055 is about 9488.3114936220. The cubic root of 90028055 is about 448.1870349330.

The spelling of 90028055 in words is "ninety million, twenty-eight thousand, fifty-five".