12091430 has 32 divisors (see below), whose sum is σ = 23593248. Its totient is φ = 4435200.

The previous prime is 12091421. The next prime is 12091441. The reversal of 12091430 is 3419021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36365 + ... + 36695.

It is an arithmetic number, because the mean of its divisors is an integer number (737289).

Almost surely, 2^12091430 is an apocalyptic number.

12091430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12091430 is a deficient number, since it is larger than the sum of its proper divisors (11501818).

12091430 is a wasteful number, since it uses less digits than its factorization.

12091430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 12091430 is about 3477.2733571004. The cubic root of 12091430 is about 229.5228292452.

It can be divided in two parts, 12091 and 430, that added together give a palindrome (12521).

The spelling of 12091430 in words is "twelve million, ninety-one thousand, four hundred thirty".