90337840 has 40 divisors (see below), whose sum is σ = 214928208. Its totient is φ = 35293440.

The previous prime is 90337817. The next prime is 90337873. The reversal of 90337840 is 4873309.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 90337796 and 90337805.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 9691 + ... + 16570.

Almost surely, 2^90337840 is an apocalyptic number.

It is an amenable number.

90337840 is an abundant number, since it is smaller than the sum of its proper divisors (124590368).

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

90337840 is a wasteful number, since it uses less digits than its factorization.

90337840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26317 (or 26311 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 90337840 is about 9504.6220335161. The cubic root of 90337840 is about 448.7005144026.

The spelling of 90337840 in words is "ninety million, three hundred thirty-seven thousand, eight hundred forty".