12949380 has 36 divisors (see below), whose sum is σ = 39280332. Its totient is φ = 3453120.

The previous prime is 12949373. The next prime is 12949429. The reversal of 12949380 is 8394921.

It can be written as a sum of positive squares in 2 ways, for example, as 3326976 + 9622404 = 1824^2 + 3102^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35791 + ... + 36150.

Almost surely, 2^12949380 is an apocalyptic number.

12949380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12949380 is an abundant number, since it is smaller than the sum of its proper divisors (26330952).

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

12949380 is a wasteful number, since it uses less digits than its factorization.

12949380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71956 (or 71951 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 12949380 is about 3598.5246977060. The cubic root of 12949380 is about 234.8278806061.

The spelling of 12949380 in words is "twelve million, nine hundred forty-nine thousand, three hundred eighty".