11997430 has 16 divisors (see below), whose sum is σ = 22098384. Its totient is φ = 4687200.

The previous prime is 11997409. The next prime is 11997437. The reversal of 11997430 is 3479911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11997437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13521 + ... + 14380.

It is an arithmetic number, because the mean of its divisors is an integer number (1381149).

Almost surely, 2^11997430 is an apocalyptic number.

11997430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11997430 is a deficient number, since it is larger than the sum of its proper divisors (10100954).

11997430 is a wasteful number, since it uses less digits than its factorization.

11997430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27951.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 11997430 is about 3463.7306477265. The cubic root of 11997430 is about 228.9265033682.

The spelling of 11997430 in words is "eleven million, nine hundred ninety-seven thousand, four hundred thirty".