13926780 has 108 divisors (see below), whose sum is σ = 49172760. Its totient is φ = 3181248.

The previous prime is 13926779. The next prime is 13926793. The reversal of 13926780 is 8762931.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent 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 35 ways as a sum of consecutive naturals, for example, 8031 + ... + 9609.

Almost surely, 2^13926780 is an apocalyptic number.

13926780 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 13926780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24586380).

13926780 is an abundant number, since it is smaller than the sum of its proper divisors (35245980).

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

13926780 is a wasteful number, since it uses less digits than its factorization.

13926780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1608 (or 1596 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 13926780 is about 3731.8601259961. The cubic root of 13926780 is about 240.5933236539.

It can be divided in two parts, 13926 and 780, that added together give a triangular number (14706 = T₁₇₁).

The spelling of 13926780 in words is "thirteen million, nine hundred twenty-six thousand, seven hundred eighty".