33893990 has 16 divisors (see below), whose sum is σ = 65702448. Its totient is φ = 12514656.

The previous prime is 33893983. The next prime is 33894013. The reversal of 33893990 is 9939833.

33893990 is nontrivially palindromic in base 14.

It is a super-2 number, since 2×33893990² = 2297605116240200, which contains 22 as substring.

It is a congruent number.

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, 130232 + ... + 130491.

It is an arithmetic number, because the mean of its divisors is an integer number (4106403).

Almost surely, 2^33893990 is an apocalyptic number.

33893990 is a deficient number, since it is larger than the sum of its proper divisors (31808458).

33893990 is a wasteful number, since it uses less digits than its factorization.

33893990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260743.

The product of its (nonzero) digits is 157464, while the sum is 44.

The square root of 33893990 is about 5821.8545155303. The cubic root of 33893990 is about 323.6241322852.

The spelling of 33893990 in words is "thirty-three million, eight hundred ninety-three thousand, nine hundred ninety".