33413381 has 32 divisors (see below), whose sum is σ = 39813120. Its totient is φ = 27820800.

The previous prime is 33413377. The next prime is 33413417. The reversal of 33413381 is 18331433.

It is a cyclic number.

It is not a de Polignac number, because 33413381 - 2² = 33413377 is a prime.

It is a super-2 number, since 2×33413381² = 2232908059702322, 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 33413381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33413351) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 470576 + ... + 470646.

It is an arithmetic number, because the mean of its divisors is an integer number (1244160).

Almost surely, 2^33413381 is an apocalyptic number.

33413381 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

33413381 is a deficient number, since it is larger than the sum of its proper divisors (6399739).

33413381 is a wasteful number, since it uses less digits than its factorization.

33413381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185.

The product of its digits is 2592, while the sum is 26.

The square root of 33413381 is about 5780.4308662936. The cubic root of 33413381 is about 322.0872061681.

The spelling of 33413381 in words is "thirty-three million, four hundred thirteen thousand, three hundred eighty-one".