32455440 has 60 divisors (see below), whose sum is σ = 108998604. Its totient is φ = 8654592.

The previous prime is 32455433. The next prime is 32455453. The reversal of 32455440 is 4455423.

It can be written as a sum of positive squares in 2 ways, for example, as 15116544 + 17338896 = 3888^2 + 4164^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a nialpdrome in base 12.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21819 + ... + 23258.

Almost surely, 2^32455440 is an apocalyptic number.

32455440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

32455440 is an abundant number, since it is smaller than the sum of its proper divisors (76543164).

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

32455440 is a wasteful number, since it uses less digits than its factorization.

32455440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45096 (or 45087 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 32455440 is about 5696.9676144419. The cubic root of 32455440 is about 318.9792998298.

The spelling of 32455440 in words is "thirty-two million, four hundred fifty-five thousand, four hundred forty".