1372328685 has 48 divisors (see below), whose sum is σ = 2927643264. Its totient is φ = 579090816.

The previous prime is 1372328681. The next prime is 1372328693. The reversal of 1372328685 is 5868232731.

It is not a de Polignac number, because 1372328685 - 2² = 1372328681 is a prime.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1372328685.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1372328681) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 163467 + ... + 171656.

It is an arithmetic number, because the mean of its divisors is an integer number (60992568).

Almost surely, 2^1372328685 is an apocalyptic number.

1372328685 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1372328685 is an abundant number, since it is smaller than the sum of its proper divisors (1555314579).

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

1372328685 is a wasteful number, since it uses less digits than its factorization.

1372328685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335154 (or 335151 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 1372328685 is about 37044.9549196648. The cubic root of 1372328685 is about 1111.2694631218.

The spelling of 1372328685 in words is "one billion, three hundred seventy-two million, three hundred twenty-eight thousand, six hundred eighty-five".