33705172 has 12 divisors (see below), whose sum is σ = 59592820. Its totient is φ = 16678656.

The previous prime is 33705167. The next prime is 33705173. The reversal of 33705172 is 27150733.

It can be written as a sum of positive squares in 2 ways, for example, as 13220496 + 20484676 = 3636^2 + 4526^2 .

It is a super-2 number, since 2×33705172² = 2272077239099168, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33705172.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33705173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43047 + ... + 43822.

Almost surely, 2^33705172 is an apocalyptic number.

It is an amenable number.

33705172 is a deficient number, since it is larger than the sum of its proper divisors (25887648).

33705172 is a wasteful number, since it uses less digits than its factorization.

33705172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86970 (or 86968 counting only the distinct ones).

The product of its (nonzero) digits is 4410, while the sum is 28.

The square root of 33705172 is about 5805.6155573720. The cubic root of 33705172 is about 323.0220601125.

The spelling of 33705172 in words is "thirty-three million, seven hundred five thousand, one hundred seventy-two".