32643930 has 64 divisors (see below), whose sum is σ = 88252416. Its totient is φ = 7656000.

The previous prime is 32643929. The next prime is 32643943. The reversal of 32643930 is 3934623.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 8635 + ... + 11825.

It is an arithmetic number, because the mean of its divisors is an integer number (1378944).

Almost surely, 2^32643930 is an apocalyptic number.

32643930 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 32643930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44126208).

32643930 is an abundant number, since it is smaller than the sum of its proper divisors (55608486).

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

32643930 is a wasteful number, since it uses less digits than its factorization.

32643930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3243.

The product of its (nonzero) digits is 11664, while the sum is 30.

The square root of 32643930 is about 5713.4866762775. The cubic root of 32643930 is about 319.5956154960.

The spelling of 32643930 in words is "thirty-two million, six hundred forty-three thousand, nine hundred thirty".