90511128 has 96 divisors (see below), whose sum is σ = 267915600. Its totient is φ = 28214784.

The previous prime is 90511081. The next prime is 90511151. The reversal of 90511128 is 82111509.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 576426 + ... + 576582.

Almost surely, 2^90511128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90511128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133957800).

90511128 is an abundant number, since it is smaller than the sum of its proper divisors (177404472).

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

90511128 is a wasteful number, since it uses less digits than its factorization.

90511128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346 (or 179 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 27.

The square root of 90511128 is about 9513.7336519371. The cubic root of 90511128 is about 448.9872334966.

The spelling of 90511128 in words is "ninety million, five hundred eleven thousand, one hundred twenty-eight".