33905090 has 16 divisors (see below), whose sum is σ = 61601472. Its totient is φ = 13434864.

The previous prime is 33905033. The next prime is 33905093. The reversal of 33905090 is 9050933.

It is a super-2 number, since 2×33905090² = 2299110255816200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33905093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14774 + ... + 16913.

It is an arithmetic number, because the mean of its divisors is an integer number (3850092).

Almost surely, 2^33905090 is an apocalyptic number.

33905090 is a deficient number, since it is larger than the sum of its proper divisors (27696382).

33905090 is a wasteful number, since it uses less digits than its factorization.

33905090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31801.

The product of its (nonzero) digits is 3645, while the sum is 29.

The square root of 33905090 is about 5822.8077419747. The cubic root of 33905090 is about 323.6594565005.

It can be divided in two parts, 3 and 3905090, that added together give a palindrome (3905093).

The spelling of 33905090 in words is "thirty-three million, nine hundred five thousand, ninety".