1239572448 has 72 divisors (see below), whose sum is σ = 3638771136. Its totient is φ = 399859200.

The previous prime is 1239572447. The next prime is 1239572449. The reversal of 1239572448 is 8442759321.

1239572448 is a `hidden beast` number, since 1 + 2 + 39 + 572 + 4 + 48 = 666.

1239572448 is digitally balanced in base 4, 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 (1239572447) and next prime (1239572449).

It is a tau number, because it is divible by the number of its divisors (72).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1239572441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60493 + ... + 78348.

It is an arithmetic number, because the mean of its divisors is an integer number (50538488).

Almost surely, 2^1239572448 is an apocalyptic number.

1239572448 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1239572448 is an abundant number, since it is smaller than the sum of its proper divisors (2399198688).

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

1239572448 is a wasteful number, since it uses less digits than its factorization.

1239572448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138888 (or 138877 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 1239572448 is about 35207.5623694683. The cubic root of 1239572448 is about 1074.2135796539.

The spelling of 1239572448 in words is "one billion, two hundred thirty-nine million, five hundred seventy-two thousand, four hundred forty-eight".