90343644 has 24 divisors (see below), whose sum is σ = 223202448. Its totient is φ = 28343040.

The previous prime is 90343597. The next prime is 90343657. The reversal of 90343644 is 44634309.

It is a super-2 number, since 2×90343644² = 16323948022397472, 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 7 ways as a sum of consecutive naturals, for example, 221227 + ... + 221634.

It is an arithmetic number, because the mean of its divisors is an integer number (9300102).

Almost surely, 2^90343644 is an apocalyptic number.

It is an amenable number.

90343644 is an abundant number, since it is smaller than the sum of its proper divisors (132858804).

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

90343644 is a wasteful number, since it uses less digits than its factorization.

90343644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442885 (or 442883 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 33.

The square root of 90343644 is about 9504.9273537466. The cubic root of 90343644 is about 448.7101235248.

The spelling of 90343644 in words is "ninety million, three hundred forty-three thousand, six hundred forty-four".