990783528 has 96 divisors (see below), whose sum is σ = 3050913600. Its totient is φ = 266423808.

The previous prime is 990783527. The next prime is 990783539. The reversal of 990783528 is 825387099.

It is a super-2 number, since 2×990783528² = 1963303998712253568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (990783527) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4788 + ... + 44771.

It is an arithmetic number, because the mean of its divisors is an integer number (31780350).

Almost surely, 2^990783528 is an apocalyptic number.

990783528 is a gapful number since it is divisible by the number (98) 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 990783528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1525456800).

990783528 is an abundant number, since it is smaller than the sum of its proper divisors (2060130072).

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

990783528 is a wasteful number, since it uses less digits than its factorization.

990783528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49599 (or 49588 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 51.

The square root of 990783528 is about 31476.7140597617. The cubic root of 990783528 is about 996.9183558912.

The spelling of 990783528 in words is "nine hundred ninety million, seven hundred eighty-three thousand, five hundred twenty-eight".