1396276740 has 36 divisors (see below), whose sum is σ = 4235373324. Its totient is φ = 372340416.

The previous prime is 1396276729. The next prime is 1396276747. The reversal of 1396276740 is 476726931.

1396276740 is a `hidden beast` number, since 13 + 9 + 627 + 6 + 7 + 4 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 930494016 + 465782724 = 30504^2 + 21582^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (1396276747) 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, 3878367 + ... + 3878726.

It is an arithmetic number, because the mean of its divisors is an integer number (117649259).

Almost surely, 2^1396276740 is an apocalyptic number.

1396276740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1396276740 is an abundant number, since it is smaller than the sum of its proper divisors (2839096584).

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

1396276740 is a wasteful number, since it uses less digits than its factorization.

1396276740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7757108 (or 7757103 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 45.

The square root of 1396276740 is about 37366.7865891623. The cubic root of 1396276740 is about 1117.6963545483.

The spelling of 1396276740 in words is "one billion, three hundred ninety-six million, two hundred seventy-six thousand, seven hundred forty".