32990820 has 48 divisors (see below), whose sum is σ = 95359488. Its totient is φ = 8513280.

The previous prime is 32990819. The next prime is 32990827. The reversal of 32990820 is 2809923.

It is not an unprimeable number, because it can be changed into a prime (32990827) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7009 + ... + 10728.

It is an arithmetic number, because the mean of its divisors is an integer number (1986656).

Almost surely, 2^32990820 is an apocalyptic number.

32990820 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

32990820 is an abundant number, since it is smaller than the sum of its proper divisors (62368668).

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

32990820 is a wasteful number, since it uses less digits than its factorization.

32990820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17780 (or 17778 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 32990820 is about 5743.7635745215. The cubic root of 32990820 is about 320.7236876501.

The spelling of 32990820 in words is "thirty-two million, nine hundred ninety thousand, eight hundred twenty".