1392251952 has 240 divisors, whose sum is σ = 4596650240. Its totient is φ = 353590272.

The previous prime is 1392251933. The next prime is 1392251957. The reversal of 1392251952 is 2591522931.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 1392251952.

It is not an unprimeable number, because it can be changed into a prime (1392251957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3673299 + ... + 3673677.

Almost surely, 2^1392251952 is an apocalyptic number.

1392251952 is a gapful number since it is divisible by the number (12) 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 1392251952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2298325120).

1392251952 is an abundant number, since it is smaller than the sum of its proper divisors (3204398288).

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

1392251952 is a wasteful number, since it uses less digits than its factorization.

1392251952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468 (or 433 counting only the distinct ones).

The product of its digits is 48600, while the sum is 39.

The square root of 1392251952 is about 37312.8925707992. The cubic root of 1392251952 is about 1116.6213956945.

The spelling of 1392251952 in words is "one billion, three hundred ninety-two million, two hundred fifty-one thousand, nine hundred fifty-two".