1372780 has 12 divisors (see below), whose sum is σ = 2882880. Its totient is φ = 549104.

The previous prime is 1372771. The next prime is 1372799. The reversal of 1372780 is 872731.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34300 + ... + 34339.

It is an arithmetic number, because the mean of its divisors is an integer number (240240).

2^1372780 is an apocalyptic number.

1372780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1372780 is an abundant number, since it is smaller than the sum of its proper divisors (1510100).

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

1372780 is a wasteful number, since it uses less digits than its factorization.

1372780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68648 (or 68646 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 1372780 is about 1171.6569463798. The cubic root of 1372780 is about 111.1391270095.

The spelling of 1372780 in words is "one million, three hundred seventy-two thousand, seven hundred eighty".