33898728 has 16 divisors (see below), whose sum is σ = 84746880. Its totient is φ = 11299568.

The previous prime is 33898727. The next prime is 33898729. The reversal of 33898728 is 82789833.

It is an interprime number because it is at equal distance from previous prime (33898727) and next prime (33898729).

It is a super-2 number, since 2×33898728² = 2298247520035968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33898721) 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, 706200 + ... + 706247.

It is an arithmetic number, because the mean of its divisors is an integer number (5296680).

Almost surely, 2^33898728 is an apocalyptic number.

It is an amenable number.

33898728 is an abundant number, since it is smaller than the sum of its proper divisors (50848152).

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

33898728 is a wasteful number, since it uses less digits than its factorization.

33898728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1412456 (or 1412452 counting only the distinct ones).

The product of its digits is 580608, while the sum is 48.

The square root of 33898728 is about 5822.2614163227. The cubic root of 33898728 is about 323.6392112583.

The spelling of 33898728 in words is "thirty-three million, eight hundred ninety-eight thousand, seven hundred twenty-eight".