33749072 has 20 divisors (see below), whose sum is σ = 74730336. Its totient is φ = 14463840.

The previous prime is 33749059. The next prime is 33749077. The reversal of 33749072 is 27094733.

It is a super-2 number, since 2×33749072² = 2277999721722368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33749077) 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, 150554 + ... + 150777.

Almost surely, 2^33749072 is an apocalyptic number.

It is an amenable number.

33749072 is an abundant number, since it is smaller than the sum of its proper divisors (40981264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

33749072 is a wasteful number, since it uses less digits than its factorization.

33749072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301346 (or 301340 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 35.

The square root of 33749072 is about 5809.3951492389. The cubic root of 33749072 is about 323.1622415289.

The spelling of 33749072 in words is "thirty-three million, seven hundred forty-nine thousand, seventy-two".