33161628 has 24 divisors (see below), whose sum is σ = 81929232. Its totient is φ = 10403584.

The previous prime is 33161627. The next prime is 33161629. The reversal of 33161628 is 82616133.

It is an interprime number because it is at equal distance from previous prime (33161627) and next prime (33161629).

It is a super-2 number, since 2×33161628² = 2199387143220768, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33161595 and 33161604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33161627) 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, 81075 + ... + 81482.

It is an arithmetic number, because the mean of its divisors is an integer number (3413718).

Almost surely, 2^33161628 is an apocalyptic number.

It is an amenable number.

33161628 is an abundant number, since it is smaller than the sum of its proper divisors (48767604).

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

33161628 is a wasteful number, since it uses less digits than its factorization.

33161628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162581 (or 162579 counting only the distinct ones).

The product of its digits is 5184, while the sum is 30.

The square root of 33161628 is about 5758.6133747631. The cubic root of 33161628 is about 321.2762443800.

The spelling of 33161628 in words is "thirty-three million, one hundred sixty-one thousand, six hundred twenty-eight".