990462800 has 120 divisors (see below), whose sum is σ = 2500137600. Its totient is φ = 376358400.

The previous prime is 990462793. The next prime is 990462841. The reversal of 990462800 is 8264099.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1830530 + ... + 1831070.

It is an arithmetic number, because the mean of its divisors is an integer number (20834480).

Almost surely, 2^990462800 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 990462800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1250068800).

990462800 is an abundant number, since it is smaller than the sum of its proper divisors (1509674800).

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

990462800 is a wasteful number, since it uses less digits than its factorization.

990462800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781 (or 770 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 990462800 is about 31471.6189605810. The cubic root of 990462800 is about 996.8107729771.

The spelling of 990462800 in words is "nine hundred ninety million, four hundred sixty-two thousand, eight hundred".