90890046 has 64 divisors (see below), whose sum is σ = 222647040. Its totient is φ = 27306720.

The previous prime is 90890021. The next prime is 90890083. The reversal of 90890046 is 64009809.

It is a super-2 number, since 2×90890046² = 16522000923764232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28681 + ... + 31691.

It is an arithmetic number, because the mean of its divisors is an integer number (3478860).

Almost surely, 2^90890046 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90890046, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111323520).

90890046 is an abundant number, since it is smaller than the sum of its proper divisors (131756994).

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

90890046 is a wasteful number, since it uses less digits than its factorization.

90890046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3078 (or 3072 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 90890046 is about 9533.6271166854. The cubic root of 90890046 is about 449.6129115678.

The spelling of 90890046 in words is "ninety million, eight hundred ninety thousand, forty-six".