990570528 has 72 divisors (see below), whose sum is σ = 2907830016. Its totient is φ = 319536000.

The previous prime is 990570481. The next prime is 990570547. The reversal of 990570528 is 825075099.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46548 + ... + 64403.

It is an arithmetic number, because the mean of its divisors is an integer number (40386528).

Almost surely, 2^990570528 is an apocalyptic number.

It is an amenable number.

990570528 is an abundant number, since it is smaller than the sum of its proper divisors (1917259488).

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

990570528 is a wasteful number, since it uses less digits than its factorization.

990570528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110998 (or 110987 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 45.

The square root of 990570528 is about 31473.3304243450. The cubic root of 990570528 is about 996.8469111467.

The spelling of 990570528 in words is "nine hundred ninety million, five hundred seventy thousand, five hundred twenty-eight".