1392450768 has 120 divisors (see below), whose sum is σ = 4063748832. Its totient is φ = 444697344.

The previous prime is 1392450767. The next prime is 1392450769. The reversal of 1392450768 is 8670542931.

1392450768 is a `hidden beast` number, since 139 + 2 + 4 + 507 + 6 + 8 = 666.

1392450768 is digitally balanced in base 10, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1392450767) and next prime (1392450769).

1392450768 is strictly pandigital in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1392450767) 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 23 ways as a sum of consecutive naturals, for example, 326055 + ... + 330297.

It is a 2-persistent number, because it is pandigital, and so is 2⋅1392450768 = 2784901536, but 3⋅1392450768 = 4177352304 is not.

It is a vampire number, since it can be written as 27348 ⋅ 50916 (with its own digits).

Almost surely, 2^1392450768 is an apocalyptic number.

1392450768 is a gapful number since it is divisible by the number (18) 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 1392450768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2031874416).

1392450768 is an abundant number, since it is smaller than the sum of its proper divisors (2671298064).

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

1392450768 is a wasteful number, since it uses less digits than its factorization.

1392450768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4353 (or 4344 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 1392450768 is about 37315.5566486687. The cubic root of 1392450768 is about 1116.6745449903.

The spelling of 1392450768 in words is "one billion, three hundred ninety-two million, four hundred fifty thousand, seven hundred sixty-eight".