33390842 has 16 divisors (see below), whose sum is σ = 51143400. Its totient is φ = 16346880.

The previous prime is 33390827. The next prime is 33390859. The reversal of 33390842 is 24809333.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 29822521 + 3568321 = 5461^2 + 1889^2 .

It is a super-2 number, since 2×33390842² = 2229896658937928, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33390799 and 33390808.

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, 18542 + ... + 20262.

Almost surely, 2^33390842 is an apocalyptic number.

33390842 is a deficient number, since it is larger than the sum of its proper divisors (17752558).

33390842 is a wasteful number, since it uses less digits than its factorization.

33390842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1921.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 33390842 is about 5778.4809422546. The cubic root of 33390842 is about 322.0147685574.

The spelling of 33390842 in words is "thirty-three million, three hundred ninety thousand, eight hundred forty-two".