6388402 has 8 divisors (see below), whose sum is σ = 9745200. Its totient is φ = 3140004.

The previous prime is 6388399. The next prime is 6388409. The reversal of 6388402 is 2048836.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×6388402² = 81623360227208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6388409) 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, 26952 + ... + 27187.

It is an arithmetic number, because the mean of its divisors is an integer number (1218150).

Almost surely, 2^6388402 is an apocalyptic number.

6388402 is a deficient number, since it is larger than the sum of its proper divisors (3356798).

6388402 is a wasteful number, since it uses less digits than its factorization.

6388402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54200.

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 6388402 is about 2527.5288326743. The cubic root of 6388402 is about 185.5513331390.

The spelling of 6388402 in words is "six million, three hundred eighty-eight thousand, four hundred two".