33904986 has 16 divisors (see below), whose sum is σ = 67937184. Its totient is φ = 11280464.

The previous prime is 33904963. The next prime is 33905009. The reversal of 33904986 is 68940933.

It is an interprime number because it is at equal distance from previous prime (33904963) and next prime (33905009).

It is a super-2 number, since 2×33904986² = 2299096151320392, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1641 + ... + 8396.

It is an arithmetic number, because the mean of its divisors is an integer number (4246074).

Almost surely, 2^33904986 is an apocalyptic number.

33904986 is an abundant number, since it is smaller than the sum of its proper divisors (34032198).

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

33904986 is a wasteful number, since it uses less digits than its factorization.

33904986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10605.

The product of its (nonzero) digits is 139968, while the sum is 42.

The square root of 33904986 is about 5822.7988115682. The cubic root of 33904986 is about 323.6591255706.

The spelling of 33904986 in words is "thirty-three million, nine hundred four thousand, nine hundred eighty-six".