4000628 has 12 divisors (see below), whose sum is σ = 7016772. Its totient is φ = 1995840.

The previous prime is 4000589. The next prime is 4000631. The reversal of 4000628 is 8260004.

It can be written as a sum of positive squares in 2 ways, for example, as 1350244 + 2650384 = 1162^2 + 1628^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1658 + ... + 3278.

It is an arithmetic number, because the mean of its divisors is an integer number (584731).

Almost surely, 2^4000628 is an apocalyptic number.

It is an amenable number.

4000628 is a deficient number, since it is larger than the sum of its proper divisors (3016144).

4000628 is a wasteful number, since it uses less digits than its factorization.

4000628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2242 (or 2240 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 4000628 is about 2000.1569938382. The cubic root of 4000628 is about 158.7484121609.

The spelling of 4000628 in words is "four million, six hundred twenty-eight", and thus it is an aban number.