12909730 has 16 divisors (see below), whose sum is σ = 23478840. Its totient is φ = 5110272.

The previous prime is 12909709. The next prime is 12909751. The reversal of 12909730 is 3790921.

12909730 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12909709) and next prime (12909751).

It can be written as a sum of positive squares in 4 ways, for example, as 5764801 + 7144929 = 2401^2 + 2673^2 .

It is a super-2 number, since 2×12909730² = 333322257345800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12909692 and 12909701.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5685 + ... + 7624.

Almost surely, 2^12909730 is an apocalyptic number.

12909730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12909730 is a deficient number, since it is larger than the sum of its proper divisors (10569110).

12909730 is a wasteful number, since it uses less digits than its factorization.

12909730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13413.

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 12909730 is about 3593.0112718999. The cubic root of 12909730 is about 234.5879606311.

The spelling of 12909730 in words is "twelve million, nine hundred nine thousand, seven hundred thirty".