11993870 has 16 divisors (see below), whose sum is σ = 24673248. Its totient is φ = 4112160.

The previous prime is 11993843. The next prime is 11993897. The reversal of 11993870 is 7839911.

It is an interprime number because it is at equal distance from previous prime (11993843) and next prime (11993897).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85601 + ... + 85740.

It is an arithmetic number, because the mean of its divisors is an integer number (1542078).

Almost surely, 2^11993870 is an apocalyptic number.

11993870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11993870 is an abundant number, since it is smaller than the sum of its proper divisors (12679378).

11993870 is a wasteful number, since it uses less digits than its factorization.

11993870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171355.

The product of its (nonzero) digits is 13608, while the sum is 38.

The square root of 11993870 is about 3463.2167128264. The cubic root of 11993870 is about 228.9038579912.

The spelling of 11993870 in words is "eleven million, nine hundred ninety-three thousand, eight hundred seventy".