90887120 has 20 divisors (see below), whose sum is σ = 211312740. Its totient is φ = 36354816.

The previous prime is 90887113. The next prime is 90887141. The reversal of 90887120 is 2178809.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19855936 + 71031184 = 4456^2 + 8428^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 567965 + ... + 568124.

It is an arithmetic number, because the mean of its divisors is an integer number (10565637).

Almost surely, 2^90887120 is an apocalyptic number.

It is an amenable number.

90887120 is an abundant number, since it is smaller than the sum of its proper divisors (120425620).

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

90887120 is a wasteful number, since it uses less digits than its factorization.

90887120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1136102 (or 1136096 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 90887120 is about 9533.4736586409. The cubic root of 90887120 is about 449.6080867582.

The spelling of 90887120 in words is "ninety million, eight hundred eighty-seven thousand, one hundred twenty".