33890970 has 16 divisors (see below), whose sum is σ = 81338400. Its totient is φ = 9037584.

The previous prime is 33890959. The next prime is 33890971. The reversal of 33890970 is 7909833.

It is a happy number.

It is a super-2 number, since 2×33890970² = 2297195695081800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33890971) 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, 564820 + ... + 564879.

It is an arithmetic number, because the mean of its divisors is an integer number (5083650).

Almost surely, 2^33890970 is an apocalyptic number.

33890970 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

33890970 is an abundant number, since it is smaller than the sum of its proper divisors (47447430).

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

33890970 is a wasteful number, since it uses less digits than its factorization.

33890970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1129709.

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 33890970 is about 5821.5951422269. The cubic root of 33890970 is about 323.6145202182.

The spelling of 33890970 in words is "thirty-three million, eight hundred ninety thousand, nine hundred seventy".