33889380 has 72 divisors (see below), whose sum is σ = 110392128. Its totient is φ = 7745472.

The previous prime is 33889379. The next prime is 33889403. The reversal of 33889380 is 8398833.

It is a super-2 number, since 2×33889380² = 2296980153568800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2824 + ... + 8703.

It is an arithmetic number, because the mean of its divisors is an integer number (1533224).

Almost surely, 2^33889380 is an apocalyptic number.

33889380 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

33889380 is an abundant number, since it is smaller than the sum of its proper divisors (76502748).

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

33889380 is a wasteful number, since it uses less digits than its factorization.

33889380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11553 (or 11544 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 33889380 is about 5821.4585801155. The cubic root of 33889380 is about 323.6094593309.

The spelling of 33889380 in words is "thirty-three million, eight hundred eighty-nine thousand, three hundred eighty".