12578730 has 16 divisors (see below), whose sum is σ = 30189024. Its totient is φ = 3354320.

The previous prime is 12578717. The next prime is 12578737. The reversal of 12578730 is 3787521.

It is a junction number, because it is equal to n+sod(n) for n = 12578691 and 12578700.

It is not an unprimeable number, because it can be changed into a prime (12578737) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209616 + ... + 209675.

It is an arithmetic number, because the mean of its divisors is an integer number (1886814).

Almost surely, 2^12578730 is an apocalyptic number.

12578730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12578730 is an abundant number, since it is smaller than the sum of its proper divisors (17610294).

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

12578730 is a wasteful number, since it uses less digits than its factorization.

12578730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419301.

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 12578730 is about 3546.6505325448. The cubic root of 12578730 is about 232.5656653464.

The spelling of 12578730 in words is "twelve million, five hundred seventy-eight thousand, seven hundred thirty".