13229730 has 40 divisors (see below), whose sum is σ = 35575452. Its totient is φ = 3527712.

The previous prime is 13229729. The next prime is 13229737. The reversal of 13229730 is 3792231.

It can be written as a sum of positive squares in 2 ways, for example, as 11881809 + 1347921 = 3447^2 + 1161^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 13229694 and 13229703.

It is not an unprimeable number, because it can be changed into a prime (13229737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7357 + ... + 8976.

Almost surely, 2^13229730 is an apocalyptic number.

13229730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13229730 is an abundant number, since it is smaller than the sum of its proper divisors (22345722).

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

13229730 is a wasteful number, since it uses less digits than its factorization.

13229730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16352 (or 16343 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 13229730 is about 3637.2695803308. The cubic root of 13229730 is about 236.5104459567.

The spelling of 13229730 in words is "thirteen million, two hundred twenty-nine thousand, seven hundred thirty".