13249830 has 32 divisors (see below), whose sum is σ = 34691328. Its totient is φ = 3212000.

The previous prime is 13249799. The next prime is 13249837. The reversal of 13249830 is 3894231.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13249837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19746 + ... + 20405.

It is an arithmetic number, because the mean of its divisors is an integer number (1084104).

Almost surely, 2^13249830 is an apocalyptic number.

13249830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13249830 is an abundant number, since it is smaller than the sum of its proper divisors (21441498).

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

13249830 is a wasteful number, since it uses less digits than its factorization.

13249830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40172.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 13249830 is about 3640.0315932695. The cubic root of 13249830 is about 236.6301625463.

The spelling of 13249830 in words is "thirteen million, two hundred forty-nine thousand, eight hundred thirty".