33264991 has 8 divisors (see below), whose sum is σ = 35510400. Its totient is φ = 31069080.

The previous prime is 33264949. The next prime is 33265007. The reversal of 33264991 is 19946233.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 33264991 - 2¹⁹ = 32740703 is a prime.

It is a super-2 number, since 2×33264991² = 2213119252460162, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 33264991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33264911) 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, 10981 + ... + 13678.

It is an arithmetic number, because the mean of its divisors is an integer number (4438800).

Almost surely, 2^33264991 is an apocalyptic number.

33264991 is a deficient number, since it is larger than the sum of its proper divisors (2245409).

33264991 is a wasteful number, since it uses less digits than its factorization.

33264991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24749.

The product of its digits is 34992, while the sum is 37.

The square root of 33264991 is about 5767.5810354082. The cubic root of 33264991 is about 321.6096983897.

The spelling of 33264991 in words is "thirty-three million, two hundred sixty-four thousand, nine hundred ninety-one".