90205134 has 16 divisors (see below), whose sum is σ = 182163072. Its totient is φ = 29776248.

The previous prime is 90205121. The next prime is 90205139. The reversal of 90205134 is 43150209.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90205139) 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, 72364 + ... + 73599.

It is an arithmetic number, because the mean of its divisors is an integer number (11385192).

Almost surely, 2^90205134 is an apocalyptic number.

90205134 is an abundant number, since it is smaller than the sum of its proper divisors (91957938).

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

90205134 is a wasteful number, since it uses less digits than its factorization.

90205134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146071.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 90205134 is about 9497.6383380291. The cubic root of 90205134 is about 448.4806935186.

The spelling of 90205134 in words is "ninety million, two hundred five thousand, one hundred thirty-four".