32055990 has 32 divisors (see below), whose sum is σ = 78389856. Its totient is φ = 8386560.

The previous prime is 32055977. The next prime is 32056001. The reversal of 32055990 is 9955023.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8491 + ... + 11670.

It is an arithmetic number, because the mean of its divisors is an integer number (2449683).

Almost surely, 2^32055990 is an apocalyptic number.

32055990 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

32055990 is an abundant number, since it is smaller than the sum of its proper divisors (46333866).

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

32055990 is a wasteful number, since it uses less digits than its factorization.

32055990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20224.

The product of its (nonzero) digits is 12150, while the sum is 33.

The square root of 32055990 is about 5661.8009502278. The cubic root of 32055990 is about 317.6652662242.

The spelling of 32055990 in words is "thirty-two million, fifty-five thousand, nine hundred ninety".