33743990 has 32 divisors (see below), whose sum is σ = 72437760. Its totient is φ = 11065824.

The previous prime is 33743971. The next prime is 33743993. The reversal of 33743990 is 9934733.

It is a super-2 number, since 2×33743990² = 2277313722240200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33743993) 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 15 ways as a sum of consecutive naturals, for example, 8870 + ... + 12089.

It is an arithmetic number, because the mean of its divisors is an integer number (2263680).

Almost surely, 2^33743990 is an apocalyptic number.

33743990 is an abundant number, since it is smaller than the sum of its proper divisors (38693770).

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

33743990 is a wasteful number, since it uses less digits than its factorization.

33743990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20996.

The product of its (nonzero) digits is 61236, while the sum is 38.

The square root of 33743990 is about 5808.9577378390. The cubic root of 33743990 is about 323.1460199179.

The spelling of 33743990 in words is "thirty-three million, seven hundred forty-three thousand, nine hundred ninety".