12889170 has 96 divisors (see below), whose sum is σ = 39312000. Its totient is φ = 2868480.

The previous prime is 12889169. The next prime is 12889171. The reversal of 12889170 is 7198821.

It is an interprime number because it is at equal distance from previous prime (12889169) and next prime (12889171).

It is a super-2 number, since 2×12889170² = 332261406577800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12889171) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25581 + ... + 26079.

It is an arithmetic number, because the mean of its divisors is an integer number (409500).

Almost surely, 2^12889170 is an apocalyptic number.

12889170 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 12889170, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19656000).

12889170 is an abundant number, since it is smaller than the sum of its proper divisors (26422830).

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

12889170 is a wasteful number, since it uses less digits than its factorization.

12889170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560 (or 557 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 36.

The square root of 12889170 is about 3590.1490219767. The cubic root of 12889170 is about 234.4633597507.

It can be divided in two parts, 128 and 89170, that added together give a palindrome (89298).

The spelling of 12889170 in words is "twelve million, eight hundred eighty-nine thousand, one hundred seventy".