33390434 has 48 divisors (see below), whose sum is σ = 65729664. Its totient is φ = 12429120.

The previous prime is 33390433. The next prime is 33390443. The reversal of 33390434 is 43409333.

It is a super-2 number, since 2×33390434² = 2229842165416712, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33390397 and 33390406.

It is not an unprimeable number, because it can be changed into a prime (33390433) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38534 + ... + 39390.

It is an arithmetic number, because the mean of its divisors is an integer number (1369368).

Almost surely, 2^33390434 is an apocalyptic number.

33390434 is a deficient number, since it is larger than the sum of its proper divisors (32339230).

33390434 is a wasteful number, since it uses less digits than its factorization.

33390434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 911 (or 900 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 29.

The square root of 33390434 is about 5778.4456387510. The cubic root of 33390434 is about 322.0134569945.

Adding to 33390434 its reverse (43409333), we get a palindrome (76799767).

The spelling of 33390434 in words is "thirty-three million, three hundred ninety thousand, four hundred thirty-four".