13936780 has 72 divisors (see below), whose sum is σ = 34722576. Its totient is φ = 4667520.

The previous prime is 13936771. The next prime is 13936799. The reversal of 13936780 is 8763931.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31239 + ... + 31681.

It is an arithmetic number, because the mean of its divisors is an integer number (482258).

Almost surely, 2^13936780 is an apocalyptic number.

13936780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13936780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17361288).

13936780 is an abundant number, since it is smaller than the sum of its proper divisors (20785796).

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

13936780 is a wasteful number, since it uses less digits than its factorization.

13936780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487 (or 474 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 13936780 is about 3733.1996999893. The cubic root of 13936780 is about 240.6508951723.

The spelling of 13936780 in words is "thirteen million, nine hundred thirty-six thousand, seven hundred eighty".