33864728 has 16 divisors (see below), whose sum is σ = 64391760. Its totient is φ = 16693600.

The previous prime is 33864713. The next prime is 33864739. The reversal of 33864728 is 82746833.

It is a super-2 number, since 2×33864728² = 2293639605027968, 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 3 ways as a sum of consecutive naturals, for example, 29243 + ... + 30378.

It is an arithmetic number, because the mean of its divisors is an integer number (4024485).

Almost surely, 2^33864728 is an apocalyptic number.

It is an amenable number.

33864728 is a deficient number, since it is larger than the sum of its proper divisors (30527032).

33864728 is a wasteful number, since it uses less digits than its factorization.

33864728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59698 (or 59694 counting only the distinct ones).

The product of its digits is 193536, while the sum is 41.

The square root of 33864728 is about 5819.3408561451. The cubic root of 33864728 is about 323.5309730367.

The spelling of 33864728 in words is "thirty-three million, eight hundred sixty-four thousand, seven hundred twenty-eight".