12779130 has 128 divisors (see below), whose sum is σ = 39223296. Its totient is φ = 2592000.

The previous prime is 12779101. The next prime is 12779131. The reversal of 12779130 is 3197721.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12779131) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 84555 + ... + 84705.

It is an arithmetic number, because the mean of its divisors is an integer number (306432).

Almost surely, 2^12779130 is an apocalyptic number.

12779130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12779130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19611648).

12779130 is an abundant number, since it is smaller than the sum of its proper divisors (26444166).

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

12779130 is a wasteful number, since it uses less digits than its factorization.

12779130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212.

The product of its (nonzero) digits is 2646, while the sum is 30.

The square root of 12779130 is about 3574.7909029760. The cubic root of 12779130 is about 233.7942160439.

The spelling of 12779130 in words is "twelve million, seven hundred seventy-nine thousand, one hundred thirty".