33897028 has 12 divisors (see below), whose sum is σ = 64712592. Its totient is φ = 15407720.

The previous prime is 33897023. The next prime is 33897067. The reversal of 33897028 is 82079833.

It is a happy number.

It is a super-2 number, since 2×33897028² = 2298017014465568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33897023) 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, 385150 + ... + 385237.

It is an arithmetic number, because the mean of its divisors is an integer number (5392716).

Almost surely, 2^33897028 is an apocalyptic number.

It is an amenable number.

33897028 is a deficient number, since it is larger than the sum of its proper divisors (30815564).

33897028 is a wasteful number, since it uses less digits than its factorization.

33897028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770402 (or 770400 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 33897028 is about 5822.1154231087. The cubic root of 33897028 is about 323.6338010666.

The spelling of 33897028 in words is "thirty-three million, eight hundred ninety-seven thousand, twenty-eight".