12997380 has 96 divisors (see below), whose sum is σ = 40642560. Its totient is φ = 3076480.

The previous prime is 12997379. The next prime is 12997381. The reversal of 12997380 is 8379921.

12997380 = T₁₆₉₅ + T₁₆₉₆ + ... + T₁₇₀₃.

It is an interprime number because it is at equal distance from previous prime (12997379) and next prime (12997381).

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (12997381) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30811 + ... + 31229.

It is an arithmetic number, because the mean of its divisors is an integer number (423360).

Almost surely, 2^12997380 is an apocalyptic number.

12997380 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 12997380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20321280).

12997380 is an abundant number, since it is smaller than the sum of its proper divisors (27645180).

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

12997380 is a wasteful number, since it uses less digits than its factorization.

12997380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489 (or 487 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 12997380 is about 3605.1879285274. The cubic root of 12997380 is about 235.1176715649.

The spelling of 12997380 in words is "twelve million, nine hundred ninety-seven thousand, three hundred eighty".