6402666028 has 12 divisors (see below), whose sum is σ = 12223271592. Its totient is φ = 2910302720.

The previous prime is 6402666013. The next prime is 6402666041. The reversal of 6402666028 is 8206662046.

It is a super-2 number, since 2×6402666028² = 81988264532210593568, which contains 22 as substring.

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, 72757525 + ... + 72757612.

It is an arithmetic number, because the mean of its divisors is an integer number (1018605966).

Almost surely, 2^6402666028 is an apocalyptic number.

It is an amenable number.

6402666028 is a deficient number, since it is larger than the sum of its proper divisors (5820605564).

6402666028 is a wasteful number, since it uses less digits than its factorization.

6402666028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145515152 (or 145515150 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 40.

The square root of 6402666028 is about 80016.6609400817. The cubic root of 6402666028 is about 1856.8933019432.

The spelling of 6402666028 in words is "six billion, four hundred two million, six hundred sixty-six thousand, twenty-eight".