1372289780 has 48 divisors (see below), whose sum is σ = 2942838864. Its totient is φ = 537338880.

The previous prime is 1372289771. The next prime is 1372289783. The reversal of 1372289780 is 879822731.

It can be written as a sum of positive squares in 8 ways, for example, as 142945936 + 1229343844 = 11956^2 + 35062^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1372289783) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 572264 + ... + 574656.

It is an arithmetic number, because the mean of its divisors is an integer number (61309143).

Almost surely, 2^1372289780 is an apocalyptic number.

1372289780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1372289780 is an abundant number, since it is smaller than the sum of its proper divisors (1570549084).

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

1372289780 is a wasteful number, since it uses less digits than its factorization.

1372289780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2996 (or 2994 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 47.

The square root of 1372289780 is about 37044.4298107016. The cubic root of 1372289780 is about 1111.2589616661.

The spelling of 1372289780 in words is "one billion, three hundred seventy-two million, two hundred eighty-nine thousand, seven hundred eighty".