33958990 has 16 divisors (see below), whose sum is σ = 65828448. Its totient is φ = 12538656.

The previous prime is 33958937. The next prime is 33959011. The reversal of 33958990 is 9985933.

It is a self number, because there is not a number n which added to its sum of digits gives 33958990.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130482 + ... + 130741.

It is an arithmetic number, because the mean of its divisors is an integer number (4114278).

Almost surely, 2^33958990 is an apocalyptic number.

33958990 is a deficient number, since it is larger than the sum of its proper divisors (31869458).

33958990 is a wasteful number, since it uses less digits than its factorization.

33958990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261243.

The product of its (nonzero) digits is 262440, while the sum is 46.

The square root of 33958990 is about 5827.4342553134. The cubic root of 33958990 is about 323.8308762729.

The spelling of 33958990 in words is "thirty-three million, nine hundred fifty-eight thousand, nine hundred ninety".