33725720 has 48 divisors (see below), whose sum is σ = 88277040. Its totient is φ = 11562432.

The previous prime is 33725719. The next prime is 33725761. The reversal of 33725720 is 2752733.

It is a super-2 number, since 2×33725720² = 2274848379036800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6644 + ... + 10563.

It is an arithmetic number, because the mean of its divisors is an integer number (1839105).

Almost surely, 2^33725720 is an apocalyptic number.

It is an amenable number.

33725720 is an abundant number, since it is smaller than the sum of its proper divisors (54551320).

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

33725720 is a wasteful number, since it uses less digits than its factorization.

33725720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17232 (or 17221 counting only the distinct ones).

The product of its (nonzero) digits is 8820, while the sum is 29.

The square root of 33725720 is about 5807.3849536603. The cubic root of 33725720 is about 323.0876890999.

The spelling of 33725720 in words is "thirty-three million, seven hundred twenty-five thousand, seven hundred twenty".