11847420 has 144 divisors (see below), whose sum is σ = 39809952. Its totient is φ = 2833920.

The previous prime is 11847397. The next prime is 11847427. The reversal of 11847420 is 2474811.

It is a super-2 number, since 2×11847420² = 280722721312800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11847427) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 142699 + ... + 142781.

It is an arithmetic number, because the mean of its divisors is an integer number (276458).

Almost surely, 2^11847420 is an apocalyptic number.

11847420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11847420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19904976).

11847420 is an abundant number, since it is smaller than the sum of its proper divisors (27962532).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11847420 is a wasteful number, since it uses less digits than its factorization.

11847420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172 (or 167 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 11847420 is about 3442.0081347957. The cubic root of 11847420 is about 227.9683704970.

The spelling of 11847420 in words is "eleven million, eight hundred forty-seven thousand, four hundred twenty".