12078740 has 12 divisors (see below), whose sum is σ = 25365396. Its totient is φ = 4831488.

The previous prime is 12078727. The next prime is 12078751. The reversal of 12078740 is 4787021.

It can be written as a sum of positive squares in 2 ways, for example, as 2067844 + 10010896 = 1438^2 + 3164^2 .

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 301949 + ... + 301988.

It is an arithmetic number, because the mean of its divisors is an integer number (2113783).

Almost surely, 2^12078740 is an apocalyptic number.

12078740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12078740 is an abundant number, since it is smaller than the sum of its proper divisors (13286656).

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

12078740 is a wasteful number, since it uses less digits than its factorization.

12078740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603946 (or 603944 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 29.

The square root of 12078740 is about 3475.4481725383. The cubic root of 12078740 is about 229.4425061227.

The spelling of 12078740 in words is "twelve million, seventy-eight thousand, seven hundred forty".