33928690 has 8 divisors (see below), whose sum is σ = 61071660. Its totient is φ = 13571472.

The previous prime is 33928681. The next prime is 33928693. The reversal of 33928690 is 9682933.

33928690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 31102929 + 2825761 = 5577^2 + 1681^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×33928690² = 2302312010232200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33928693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1696425 + ... + 1696444.

Almost surely, 2^33928690 is an apocalyptic number.

33928690 is a deficient number, since it is larger than the sum of its proper divisors (27142970).

33928690 is a wasteful number, since it uses less digits than its factorization.

33928690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3392876.

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 33928690 is about 5824.8339032113. The cubic root of 33928690 is about 323.7345346240.

The spelling of 33928690 in words is "thirty-three million, nine hundred twenty-eight thousand, six hundred ninety".