1392449072 has 240 divisors, whose sum is σ = 3517489152. Its totient is φ = 530449920.

The previous prime is 1392449059. The next prime is 1392449081. The reversal of 1392449072 is 2709442931.

It is a super-2 number, since 2×1392449072² = 3877828836227322368, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26272598 + ... + 26272650.

Almost surely, 2^1392449072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1392449072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1758744576).

1392449072 is an abundant number, since it is smaller than the sum of its proper divisors (2125040080).

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

1392449072 is a wasteful number, since it uses less digits than its factorization.

1392449072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176 (or 163 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 1392449072 is about 37315.5339235552. The cubic root of 1392449072 is about 1116.6740916216.

The spelling of 1392449072 in words is "one billion, three hundred ninety-two million, four hundred forty-nine thousand, seventy-two".