990354624 has 56 divisors (see below), whose sum is σ = 2994647808. Its totient is φ = 282958080.

The previous prime is 990354623. The next prime is 990354643. The reversal of 990354624 is 426453099.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (990354623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 367092 + ... + 369779.

Almost surely, 2^990354624 is an apocalyptic number.

It is an amenable number.

990354624 is an abundant number, since it is smaller than the sum of its proper divisors (2004293184).

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

990354624 is a wasteful number, since it uses less digits than its factorization.

990354624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736893 (or 736883 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 42.

The square root of 990354624 is about 31469.9002858287. The cubic root of 990354624 is about 996.7744818856.

The spelling of 990354624 in words is "nine hundred ninety million, three hundred fifty-four thousand, six hundred twenty-four".