90708444 has 48 divisors (see below), whose sum is σ = 237837600. Its totient is φ = 29893248.

The previous prime is 90708427. The next prime is 90708467. The reversal of 90708444 is 44480709.

It is a super-2 number, since 2×90708444² = 16456043625802272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 90708399 and 90708408.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4894 + ... + 14330.

It is an arithmetic number, because the mean of its divisors is an integer number (4954950).

Almost surely, 2^90708444 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 90708444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118918800).

90708444 is an abundant number, since it is smaller than the sum of its proper divisors (147129156).

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

90708444 is a wasteful number, since it uses less digits than its factorization.

90708444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9539 (or 9531 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 90708444 is about 9524.0980675337. The cubic root of 90708444 is about 449.3132636290.

The spelling of 90708444 in words is "ninety million, seven hundred eight thousand, four hundred forty-four".