32725440 has 168 divisors, whose sum is σ = 122913648. Its totient is φ = 7925760.

The previous prime is 32725439. The next prime is 32725447. The reversal of 32725440 is 4452723.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32725447) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 31164 + ... + 32196.

Almost surely, 2^32725440 is an apocalyptic number.

32725440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 32725440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61456824).

32725440 is an abundant number, since it is smaller than the sum of its proper divisors (90188208).

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

32725440 is a wasteful number, since it uses less digits than its factorization.

32725440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1067 (or 1054 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 32725440 is about 5720.6153515160. The cubic root of 32725440 is about 319.8613983094.

The spelling of 32725440 in words is "thirty-two million, seven hundred twenty-five thousand, four hundred forty".