6402390192 has 120 divisors (see below), whose sum is σ = 19878281280. Its totient is φ = 1907207040.

The previous prime is 6402390187. The next prime is 6402390199. The reversal of 6402390192 is 2910932046.

6402390192 is a `hidden beast` number, since 640 + 2 + 3 + 9 + 0 + 1 + 9 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (6402390199) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59203 + ... + 127709.

It is an arithmetic number, because the mean of its divisors is an integer number (165652344).

Almost surely, 2^6402390192 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6402390192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9939140640).

6402390192 is an abundant number, since it is smaller than the sum of its proper divisors (13475891088).

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

6402390192 is a wasteful number, since it uses less digits than its factorization.

6402390192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68591 (or 68582 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 6402390192 is about 80014.9373054807. The cubic root of 6402390192 is about 1856.8666356881.

The spelling of 6402390192 in words is "six billion, four hundred two million, three hundred ninety thousand, one hundred ninety-two".