1392685056 has 312 divisors, whose sum is σ = 4818273840. Its totient is φ = 396361728.

The previous prime is 1392685051. The next prime is 1392685087. The reversal of 1392685056 is 6505862931.

1392685056 is a `hidden beast` number, since 139 + 2 + 6 + 8 + 505 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (1392685051) 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, 5418880 + ... + 5419136.

Almost surely, 2^1392685056 is an apocalyptic number.

1392685056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1392685056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2409136920).

1392685056 is an abundant number, since it is smaller than the sum of its proper divisors (3425588784).

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

1392685056 is an equidigital number, since it uses as much as digits as its factorization.

1392685056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304 (or 269 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 45.

The square root of 1392685056 is about 37318.6957971470. The cubic root of 1392685056 is about 1116.7371704897.

The spelling of 1392685056 in words is "one billion, three hundred ninety-two million, six hundred eighty-five thousand, fifty-six".