3621128 has 16 divisors (see below), whose sum is σ = 7759680. Its totient is φ = 1551888.

The previous prime is 3621127. The next prime is 3621139. The reversal of 3621128 is 8211263.

It is a super-2 number, since 2×3621128² = 26225135984768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3621127) 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, 32276 + ... + 32387.

It is an arithmetic number, because the mean of its divisors is an integer number (484980).

Almost surely, 2^3621128 is an apocalyptic number.

It is an amenable number.

3621128 is an abundant number, since it is smaller than the sum of its proper divisors (4138552).

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

3621128 is a wasteful number, since it uses less digits than its factorization.

3621128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64676 (or 64672 counting only the distinct ones).

The product of its digits is 576, while the sum is 23.

The square root of 3621128 is about 1902.9261677743. The cubic root of 3621128 is about 153.5611274967.

The spelling of 3621128 in words is "three million, six hundred twenty-one thousand, one hundred twenty-eight".