90403432 has 96 divisors (see below), whose sum is σ = 212094720. Its totient is φ = 35925120.

The previous prime is 90403429. The next prime is 90403447. The reversal of 90403432 is 23430409.

It is a junction number, because it is equal to n+sod(n) for n = 90403397 and 90403406.

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 23 ways as a sum of consecutive naturals, for example, 333457 + ... + 333727.

It is an arithmetic number, because the mean of its divisors is an integer number (2209320).

Almost surely, 2^90403432 is an apocalyptic number.

90403432 is a gapful number since it is divisible by the number (92) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90403432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106047360).

90403432 is an abundant number, since it is smaller than the sum of its proper divisors (121691288).

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

90403432 is a wasteful number, since it uses less digits than its factorization.

90403432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351 (or 340 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 90403432 is about 9508.0719391473. The cubic root of 90403432 is about 448.8090847940.

The spelling of 90403432 in words is "ninety million, four hundred three thousand, four hundred thirty-two".