4001628 has 24 divisors (see below), whose sum is σ = 9829120. Its totient is φ = 1263600.

The previous prime is 4001617. The next prime is 4001629. The reversal of 4001628 is 8261004.

4001628 is a modest number, since divided by 1628 gives 4 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4001629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8548 + ... + 9003.

Almost surely, 2^4001628 is an apocalyptic number.

It is an amenable number.

4001628 is an abundant number, since it is smaller than the sum of its proper divisors (5827492).

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

4001628 is a wasteful number, since it uses less digits than its factorization.

4001628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17577 (or 17575 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 4001628 is about 2000.4069585962. The cubic root of 4001628 is about 158.7616380167.

The spelling of 4001628 in words is "four million, one thousand, six hundred twenty-eight".