13943730 has 32 divisors (see below), whose sum is σ = 33928704. Its totient is φ = 3666816.

The previous prime is 13943729. The next prime is 13943747. The reversal of 13943730 is 3734931.

13943730 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 994 + ... + 5373.

It is an arithmetic number, because the mean of its divisors is an integer number (1060272).

Almost surely, 2^13943730 is an apocalyptic number.

13943730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13943730 is an abundant number, since it is smaller than the sum of its proper divisors (19984974).

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

13943730 is a wasteful number, since it uses less digits than its factorization.

13943730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6450.

The product of its (nonzero) digits is 6804, while the sum is 30.

The square root of 13943730 is about 3734.1304208611. The cubic root of 13943730 is about 240.6908911585.

The spelling of 13943730 in words is "thirteen million, nine hundred forty-three thousand, seven hundred thirty".