1392310920 has 512 divisors, whose sum is σ = 5724794880. Its totient is φ = 261550080.

The previous prime is 1392310903. The next prime is 1392310921. The reversal of 1392310920 is 290132931.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (1392310921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 8047954 + ... + 8048126.

It is an arithmetic number, because the mean of its divisors is an integer number (11181240).

Almost surely, 2^1392310920 is an apocalyptic number.

1392310920 is a gapful number since it is divisible by the number (10) 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 1392310920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2862397440).

1392310920 is an abundant number, since it is smaller than the sum of its proper divisors (4332483960).

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

1392310920 is a wasteful number, since it uses less digits than its factorization.

1392310920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285 (or 281 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 1392310920 is about 37313.6827450736. The cubic root of 1392310920 is about 1116.6371600827.

The spelling of 1392310920 in words is "one billion, three hundred ninety-two million, three hundred ten thousand, nine hundred twenty".