33572736 has 96 divisors (see below), whose sum is σ = 97752720. Its totient is φ = 11059200.

The previous prime is 33572713. The next prime is 33572741. The reversal of 33572736 is 63727533.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×33572736² = 2254257205051392, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 33572736.

It is a congruent number.

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, 173856 + ... + 174048.

Almost surely, 2^33572736 is an apocalyptic number.

33572736 is a gapful number since it is divisible by the number (36) 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 33572736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48876360).

33572736 is an abundant number, since it is smaller than the sum of its proper divisors (64179984).

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

33572736 is a wasteful number, since it uses less digits than its factorization.

33572736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364 (or 349 counting only the distinct ones).

The product of its digits is 79380, while the sum is 36.

The square root of 33572736 is about 5794.1984777879. The cubic root of 33572736 is about 322.5984267807.

The spelling of 33572736 in words is "thirty-three million, five hundred seventy-two thousand, seven hundred thirty-six".