32775990 has 64 divisors (see below), whose sum is σ = 87478272. Its totient is φ = 7804800.

The previous prime is 32775961. The next prime is 32776001. The reversal of 32775990 is 9957723.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10735 + ... + 13445.

It is an arithmetic number, because the mean of its divisors is an integer number (1366848).

Almost surely, 2^32775990 is an apocalyptic number.

32775990 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 32775990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43739136).

32775990 is an abundant number, since it is smaller than the sum of its proper divisors (54702282).

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

32775990 is a wasteful number, since it uses less digits than its factorization.

32775990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2765.

The product of its (nonzero) digits is 119070, while the sum is 42.

The square root of 32775990 is about 5725.0318776405. The cubic root of 32775990 is about 320.0260070009.

The spelling of 32775990 in words is "thirty-two million, seven hundred seventy-five thousand, nine hundred ninety".