12977380 has 96 divisors (see below), whose sum is σ = 32175360. Its totient is φ = 4354560.

The previous prime is 12977369. The next prime is 12977381. The reversal of 12977380 is 8377921.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12977381) 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, 182745 + ... + 182815.

It is an arithmetic number, because the mean of its divisors is an integer number (335160).

Almost surely, 2^12977380 is an apocalyptic number.

12977380 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 12977380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16087680).

12977380 is an abundant number, since it is smaller than the sum of its proper divisors (19197980).

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

12977380 is a wasteful number, since it uses less digits than its factorization.

12977380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149 (or 147 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 12977380 is about 3602.4130801450. The cubic root of 12977380 is about 234.9970121847.

The spelling of 12977380 in words is "twelve million, nine hundred seventy-seven thousand, three hundred eighty".