13439730 has 16 divisors (see below), whose sum is σ = 32255424. Its totient is φ = 3583920.

The previous prime is 13439689. The next prime is 13439737. The reversal of 13439730 is 3793431.

13439730 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), and also a Moran number because the ratio is a prime number: 447991 = 13439730 / (1 + 3 + 4 + 3 + 9 + 7 + 3 + 0).

It is not an unprimeable number, because it can be changed into a prime (13439737) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223966 + ... + 224025.

It is an arithmetic number, because the mean of its divisors is an integer number (2015964).

Almost surely, 2^13439730 is an apocalyptic number.

13439730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13439730 is an abundant number, since it is smaller than the sum of its proper divisors (18815694).

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

13439730 is a wasteful number, since it uses less digits than its factorization.

13439730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448001.

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

The square root of 13439730 is about 3666.0237315107. The cubic root of 13439730 is about 237.7552859779.

The spelling of 13439730 in words is "thirteen million, four hundred thirty-nine thousand, seven hundred thirty".