32572816 has 40 divisors (see below), whose sum is σ = 68995584. Its totient is φ = 14830080.

The previous prime is 32572811. The next prime is 32572817. The reversal of 32572816 is 61827523.

It is a happy number.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32572811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6501 + ... + 10363.

Almost surely, 2^32572816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 32572816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34497792).

32572816 is an abundant number, since it is smaller than the sum of its proper divisors (36422768).

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

32572816 is a wasteful number, since it uses less digits than its factorization.

32572816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3919 (or 3913 counting only the distinct ones).

The product of its digits is 20160, while the sum is 34.

The square root of 32572816 is about 5707.2599380088. The cubic root of 32572816 is about 319.3633696999.

The spelling of 32572816 in words is "thirty-two million, five hundred seventy-two thousand, eight hundred sixteen".