13229780 has 24 divisors (see below), whose sum is σ = 27852552. Its totient is φ = 5278592.

The previous prime is 13229759. The next prime is 13229789. The reversal of 13229780 is 8792231.

It can be written as a sum of positive squares in 4 ways, for example, as 470596 + 12759184 = 686^2 + 3572^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13229789) 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, 12554 + ... + 13566.

It is an arithmetic number, because the mean of its divisors is an integer number (1160523).

Almost surely, 2^13229780 is an apocalyptic number.

13229780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13229780 is an abundant number, since it is smaller than the sum of its proper divisors (14622772).

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

13229780 is a wasteful number, since it uses less digits than its factorization.

13229780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1675 (or 1673 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 13229780 is about 3637.2764536120. The cubic root of 13229780 is about 236.5107439095.

The spelling of 13229780 in words is "thirteen million, two hundred twenty-nine thousand, seven hundred eighty".