90373440 has 112 divisors (see below), whose sum is σ = 299484288. Its totient is φ = 23046144.

The previous prime is 90373403. The next prime is 90373441. The reversal of 90373440 is 4437309.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 90373398 and 90373407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90373441) by changing a digit.

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, 20034 + ... + 24126.

Almost surely, 2^90373440 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 90373440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149742144).

90373440 is an abundant number, since it is smaller than the sum of its proper divisors (209110848).

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

90373440 is a wasteful number, since it uses less digits than its factorization.

90373440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4136 (or 4126 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 30.

The square root of 90373440 is about 9506.4946220991. The cubic root of 90373440 is about 448.7594474052.

The spelling of 90373440 in words is "ninety million, three hundred seventy-three thousand, four hundred forty".