33400012 has 12 divisors (see below), whose sum is σ = 58496760. Its totient is φ = 16686656.

The previous prime is 33399991. The next prime is 33400021. The reversal of 33400012 is 21000433.

It is a super-2 number, since 2×33400012² = 2231121603200288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33399965 and 33400001.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4164 + ... + 9172.

It is an arithmetic number, because the mean of its divisors is an integer number (4874730).

Almost surely, 2^33400012 is an apocalyptic number.

It is an amenable number.

33400012 is a deficient number, since it is larger than the sum of its proper divisors (25096748).

33400012 is a wasteful number, since it uses less digits than its factorization.

33400012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6680 (or 6678 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 33400012 is about 5779.2743489127. The cubic root of 33400012 is about 322.0442437565.

Adding to 33400012 its reverse (21000433), we get a palindrome (54400445).

The spelling of 33400012 in words is "thirty-three million, four hundred thousand, twelve".