12147889400 has 96 divisors (see below), whose sum is σ = 30689702400. Its totient is φ = 4454870400.

The previous prime is 12147889333. The next prime is 12147889409. The reversal of 12147889400 is 498874121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12147889409) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66239 + ... + 169361.

It is an arithmetic number, because the mean of its divisors is an integer number (319684400).

Almost surely, 2^12147889400 is an apocalyptic number.

12147889400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12147889400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15344851200).

12147889400 is an abundant number, since it is smaller than the sum of its proper divisors (18541813000).

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

12147889400 is a wasteful number, since it uses less digits than its factorization.

12147889400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103189 (or 103180 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 44.

The spelling of 12147889400 in words is "twelve billion, one hundred forty-seven million, eight hundred eighty-nine thousand, four hundred".