33128801 has 16 divisors (see below), whose sum is σ = 37209600. Its totient is φ = 29341440.

The previous prime is 33128773. The next prime is 33128807. The reversal of 33128801 is 10882133.

It is a cyclic number.

It is not a de Polignac number, because 33128801 - 2¹⁰ = 33127777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (33128807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18650 + ... + 20348.

It is an arithmetic number, because the mean of its divisors is an integer number (2325600).

Almost surely, 2^33128801 is an apocalyptic number.

33128801 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

33128801 is a deficient number, since it is larger than the sum of its proper divisors (4080799).

33128801 is a wasteful number, since it uses less digits than its factorization.

33128801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1784.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 33128801 is about 5755.7624169175. The cubic root of 33128801 is about 321.1701979455.

The spelling of 33128801 in words is "thirty-three million, one hundred twenty-eight thousand, eight hundred one".