90455274 has 144 divisors (see below), whose sum is σ = 256943232. Its totient is φ = 22819104.

The previous prime is 90455243. The next prime is 90455291. The reversal of 90455274 is 47255409.

90455274 is a `hidden beast` number, since 90 + 45 + 527 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3932827 + ... + 3932849.

It is an arithmetic number, because the mean of its divisors is an integer number (1784328).

Almost surely, 2^90455274 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90455274, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128471616).

90455274 is an abundant number, since it is smaller than the sum of its proper divisors (166487958).

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

90455274 is a wasteful number, since it uses less digits than its factorization.

90455274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79 (or 48 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 90455274 is about 9510.7977583376. The cubic root of 90455274 is about 448.8948585084.

The spelling of 90455274 in words is "ninety million, four hundred fifty-five thousand, two hundred seventy-four".