1392550272 has 128 divisors (see below), whose sum is σ = 4288896000. Its totient is φ = 443976192.

The previous prime is 1392550231. The next prime is 1392550303. The reversal of 1392550272 is 2720552931.

1392550272 is a `hidden beast` number, since 1 + 39 + 2 + 550 + 2 + 72 = 666.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70729 + ... + 88247.

It is an arithmetic number, because the mean of its divisors is an integer number (33507000).

Almost surely, 2^1392550272 is an apocalyptic number.

1392550272 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 1392550272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2144448000).

1392550272 is an abundant number, since it is smaller than the sum of its proper divisors (2896345728).

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

1392550272 is a wasteful number, since it uses less digits than its factorization.

1392550272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17565 (or 17547 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 1392550272 is about 37316.8899025629. The cubic root of 1392550272 is about 1116.7011434023.

It can be divided in two parts, 139 and 2550272, that added together give a triangular number (2550411 = T₂₂₅₈).

The spelling of 1392550272 in words is "one billion, three hundred ninety-two million, five hundred fifty thousand, two hundred seventy-two".