33091872 has 48 divisors (see below), whose sum is σ = 94766112. Its totient is φ = 10027520.

The previous prime is 33091823. The next prime is 33091873. The reversal of 33091872 is 27819033.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (33091873) 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, 14613 + ... + 16724.

It is an arithmetic number, because the mean of its divisors is an integer number (1974294).

Almost surely, 2^33091872 is an apocalyptic number.

33091872 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

33091872 is an abundant number, since it is smaller than the sum of its proper divisors (61674240).

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

33091872 is a wasteful number, since it uses less digits than its factorization.

33091872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31361 (or 31353 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 33091872 is about 5752.5535199596. The cubic root of 33091872 is about 321.0508163841.

The spelling of 33091872 in words is "thirty-three million, ninety-one thousand, eight hundred seventy-two".