12270789 has 24 divisors (see below), whose sum is σ = 18932160. Its totient is φ = 7636032.

The previous prime is 12270763. The next prime is 12270871. The reversal of 12270789 is 98707221.

12270789 = T₁₁₂₇ + T₁₁₂₈ + ... + T₁₁₄₅.

It is not a de Polignac number, because 12270789 - 2⁵ = 12270757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12270749) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11992 + ... + 12974.

It is an arithmetic number, because the mean of its divisors is an integer number (788840).

Almost surely, 2^12270789 is an apocalyptic number.

12270789 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

12270789 is a deficient number, since it is larger than the sum of its proper divisors (6661371).

12270789 is a wasteful number, since it uses less digits than its factorization.

12270789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1081 (or 1078 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 12270789 is about 3502.9685982035. The cubic root of 12270789 is about 230.6521441160.

The spelling of 12270789 in words is "twelve million, two hundred seventy thousand, seven hundred eighty-nine".