12538830 has 16 divisors (see below), whose sum is σ = 30093264. Its totient is φ = 3343680.

The previous prime is 12538829. The next prime is 12538831. The reversal of 12538830 is 3883521.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12538829) and next prime (12538831).

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: 417961 = 12538830 / (1 + 2 + 5 + 3 + 8 + 8 + 3 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12538831) 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, 208951 + ... + 209010.

It is an arithmetic number, because the mean of its divisors is an integer number (1880829).

Almost surely, 2^12538830 is an apocalyptic number.

12538830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12538830 is an abundant number, since it is smaller than the sum of its proper divisors (17554434).

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

12538830 is a wasteful number, since it uses less digits than its factorization.

12538830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417971.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 12538830 is about 3541.0210391919. The cubic root of 12538830 is about 232.3195038015.

The spelling of 12538830 in words is "twelve million, five hundred thirty-eight thousand, eight hundred thirty".