33365428 has 24 divisors (see below), whose sum is σ = 60641280. Its totient is φ = 16044000.

The previous prime is 33365411. The next prime is 33365429. The reversal of 33365428 is 82456333.

It is a super-2 number, since 2×33365428² = 2226503571246368, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33365393 and 33365402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33365429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44053 + ... + 44803.

It is an arithmetic number, because the mean of its divisors is an integer number (2526720).

Almost surely, 2^33365428 is an apocalyptic number.

It is an amenable number.

33365428 is a deficient number, since it is larger than the sum of its proper divisors (27275852).

33365428 is a wasteful number, since it uses less digits than its factorization.

33365428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1167 (or 1165 counting only the distinct ones).

The product of its digits is 51840, while the sum is 34.

The square root of 33365428 is about 5776.2815028355. The cubic root of 33365428 is about 321.9330519355.

The spelling of 33365428 in words is "thirty-three million, three hundred sixty-five thousand, four hundred twenty-eight".