13693780 has 24 divisors (see below), whose sum is σ = 29427552. Its totient is φ = 5349792.

The previous prime is 13693777. The next prime is 13693817. The reversal of 13693780 is 8739631.

13693780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×13693780² = 375039221376800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7102 + ... + 8821.

It is an arithmetic number, because the mean of its divisors is an integer number (1226148).

Almost surely, 2^13693780 is an apocalyptic number.

13693780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13693780 is an abundant number, since it is smaller than the sum of its proper divisors (15733772).

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

13693780 is a wasteful number, since it uses less digits than its factorization.

13693780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15975 (or 15973 counting only the distinct ones).

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

The square root of 13693780 is about 3700.5107755552. The cubic root of 13693780 is about 239.2440333473.

The spelling of 13693780 in words is "thirteen million, six hundred ninety-three thousand, seven hundred eighty".