1396278072 has 48 divisors (see below), whose sum is σ = 4321814640. Its totient is φ = 398936448.

The previous prime is 1396278071. The next prime is 1396278077. The reversal of 1396278072 is 2708726931.

1396278072 is a `hidden beast` number, since 13 + 9 + 627 + 8 + 0 + 7 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1396278071) 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, 1384693 + ... + 1385700.

It is an arithmetic number, because the mean of its divisors is an integer number (90037805).

Almost surely, 2^1396278072 is an apocalyptic number.

1396278072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1396278072 is an abundant number, since it is smaller than the sum of its proper divisors (2925536568).

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

1396278072 is a wasteful number, since it uses less digits than its factorization.

1396278072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2770412 (or 2770405 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 1396278072 is about 37366.8044124728. The cubic root of 1396278072 is about 1117.6967099628.

The spelling of 1396278072 in words is "one billion, three hundred ninety-six million, two hundred seventy-eight thousand, seventy-two".