990526320 has 480 divisors, whose sum is σ = 4094737920. Its totient is φ = 217728000.

The previous prime is 990526309. The next prime is 990526331. The reversal of 990526320 is 23625099.

990526320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (990526309) and next prime (990526331).

It is a super-2 number, since 2×990526320² = 1962284781225484800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3946195 + ... + 3946445.

It is an arithmetic number, because the mean of its divisors is an integer number (8530704).

Almost surely, 2^990526320 is an apocalyptic number.

990526320 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 990526320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2047368960).

990526320 is an abundant number, since it is smaller than the sum of its proper divisors (3104211600).

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

990526320 is a wasteful number, since it uses less digits than its factorization.

990526320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315 (or 297 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 990526320 is about 31472.6281076112. The cubic root of 990526320 is about 996.8320815568.

The spelling of 990526320 in words is "nine hundred ninety million, five hundred twenty-six thousand, three hundred twenty".