1380605272 has 32 divisors (see below), whose sum is σ = 2662880400. Its totient is φ = 670564224.

The previous prime is 1380605269. The next prime is 1380605279. The reversal of 1380605272 is 2725060831.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1380605279) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198754 + ... + 205582.

Almost surely, 2^1380605272 is an apocalyptic number.

It is an amenable number.

1380605272 is a deficient number, since it is larger than the sum of its proper divisors (1282275128).

1380605272 is a wasteful number, since it uses less digits than its factorization.

1380605272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7555 (or 7551 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 1380605272 is about 37156.4970361847. The cubic root of 1380605272 is about 1113.4990285695.

The spelling of 1380605272 in words is "one billion, three hundred eighty million, six hundred five thousand, two hundred seventy-two".