90144624 has 20 divisors (see below), whose sum is σ = 232873736. Its totient is φ = 30048192.

The previous prime is 90144619. The next prime is 90144647. The reversal of 90144624 is 42644109.

It is a super-2 number, since 2×90144624² = 16252106472202752, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 90144591 and 90144600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 938959 + ... + 939054.

Almost surely, 2^90144624 is an apocalyptic number.

It is an amenable number.

90144624 is an abundant number, since it is smaller than the sum of its proper divisors (142729112).

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

90144624 is a wasteful number, since it uses less digits than its factorization.

90144624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1878024 (or 1878018 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 90144624 is about 9494.4522748814. The cubic root of 90144624 is about 448.3803901477.

The spelling of 90144624 in words is "ninety million, one hundred forty-four thousand, six hundred twenty-four".