90870052 has 48 divisors (see below), whose sum is σ = 202058752. Its totient is φ = 34784640.

The previous prime is 90870041. The next prime is 90870119. The reversal of 90870052 is 25007809.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a junction number, because it is equal to n+sod(n) for n = 90869996 and 90870023.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7258 + ... + 15310.

Almost surely, 2^90870052 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 90870052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101029376).

90870052 is an abundant number, since it is smaller than the sum of its proper divisors (111188700).

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

90870052 is a wasteful number, since it uses less digits than its factorization.

90870052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8108 (or 8106 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 90870052 is about 9532.5784549617. The cubic root of 90870052 is about 449.5799405213.

The spelling of 90870052 in words is "ninety million, eight hundred seventy thousand, fifty-two".