33261138 has 32 divisors (see below), whose sum is σ = 74102400. Its totient is φ = 11058768.

The previous prime is 33261097. The next prime is 33261149. The reversal of 33261138 is 83116233.

It is a happy number.

It is a super-2 number, since 2×33261138² = 2212606602110088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39708 + ... + 40536.

It is an arithmetic number, because the mean of its divisors is an integer number (2315700).

Almost surely, 2^33261138 is an apocalyptic number.

33261138 is an abundant number, since it is smaller than the sum of its proper divisors (40841262).

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

33261138 is a wasteful number, since it uses less digits than its factorization.

33261138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1583 (or 1577 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 33261138 is about 5767.2470035538. The cubic root of 33261138 is about 321.5972808302.

The spelling of 33261138 in words is "thirty-three million, two hundred sixty-one thousand, one hundred thirty-eight".