13097780 has 12 divisors (see below), whose sum is σ = 27505380. Its totient is φ = 5239104.

The previous prime is 13097771. The next prime is 13097797. The reversal of 13097780 is 8779031.

It can be written as a sum of positive squares in 2 ways, for example, as 9872164 + 3225616 = 3142^2 + 1796^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13097780.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 327425 + ... + 327464.

It is an arithmetic number, because the mean of its divisors is an integer number (2292115).

Almost surely, 2^13097780 is an apocalyptic number.

13097780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13097780 is an abundant number, since it is smaller than the sum of its proper divisors (14407600).

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

13097780 is a wasteful number, since it uses less digits than its factorization.

13097780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654898 (or 654896 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 35.

The square root of 13097780 is about 3619.0855198517. The cubic root of 13097780 is about 235.7215186901.

The spelling of 13097780 in words is "thirteen million, ninety-seven thousand, seven hundred eighty".