12478730 has 24 divisors (see below), whose sum is σ = 24691716. Its totient is φ = 4537280.

The previous prime is 12478727. The next prime is 12478757. The reversal of 12478730 is 3787421.

It is a happy number.

12478730 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 12313081 + 165649 = 3509^2 + 407^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3947 + ... + 6366.

Almost surely, 2^12478730 is an apocalyptic number.

12478730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12478730 is a deficient number, since it is larger than the sum of its proper divisors (12212986).

12478730 is a wasteful number, since it uses less digits than its factorization.

12478730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10342 (or 10331 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 12478730 is about 3532.5245929788. The cubic root of 12478730 is about 231.9477314870.

The spelling of 12478730 in words is "twelve million, four hundred seventy-eight thousand, seven hundred thirty".