33305772 has 24 divisors (see below), whose sum is σ = 79814896. Its totient is φ = 10801728.

The previous prime is 33305761. The next prime is 33305773. The reversal of 33305772 is 27750333.

It is a super-2 number, since 2×33305772² = 2218548897031968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33305773) 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, 37063 + ... + 37950.

Almost surely, 2^33305772 is an apocalyptic number.

It is an amenable number.

33305772 is an abundant number, since it is smaller than the sum of its proper divisors (46509124).

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

33305772 is a wasteful number, since it uses less digits than its factorization.

33305772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75057 (or 75055 counting only the distinct ones).

The product of its (nonzero) digits is 13230, while the sum is 30.

The square root of 33305772 is about 5771.1153168170. The cubic root of 33305772 is about 321.7410698277.

The spelling of 33305772 in words is "thirty-three million, three hundred five thousand, seven hundred seventy-two".