33986972 has 12 divisors (see below), whose sum is σ = 62607720. Its totient is φ = 16099056.

The previous prime is 33986971. The next prime is 33986977. The reversal of 33986972 is 27968933.

It is a super-2 number, since 2×33986972² = 2310228531457568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33986971) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 223523 + ... + 223674.

It is an arithmetic number, because the mean of its divisors is an integer number (5217310).

Almost surely, 2^33986972 is an apocalyptic number.

It is an amenable number.

33986972 is a deficient number, since it is larger than the sum of its proper divisors (28620748).

33986972 is a wasteful number, since it uses less digits than its factorization.

33986972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447220 (or 447218 counting only the distinct ones).

The product of its digits is 489888, while the sum is 47.

The square root of 33986972 is about 5829.8346460256. The cubic root of 33986972 is about 323.9197967410.

The spelling of 33986972 in words is "thirty-three million, nine hundred eighty-six thousand, nine hundred seventy-two".