90420258 has 16 divisors (see below), whose sum is σ = 181011456. Its totient is φ = 30111600.

The previous prime is 90420251. The next prime is 90420269. The reversal of 90420258 is 85202409.

It is not an unprimeable number, because it can be changed into a prime (90420251) 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, 360 + ... + 13452.

It is an arithmetic number, because the mean of its divisors is an integer number (11313216).

Almost surely, 2^90420258 is an apocalyptic number.

90420258 is an abundant number, since it is smaller than the sum of its proper divisors (90591198).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90420258 is a wasteful number, since it uses less digits than its factorization.

90420258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14249.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 90420258 is about 9508.9567251092. The cubic root of 90420258 is about 448.8369273697.

The spelling of 90420258 in words is "ninety million, four hundred twenty thousand, two hundred fifty-eight".