11858472 has 24 divisors (see below), whose sum is σ = 32116890. Its totient is φ = 3952800.

The previous prime is 11858447. The next prime is 11858479. The reversal of 11858472 is 27485811.

11858472 is a `hidden beast` number, since 1 + 1 + 8 + 584 + 72 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6687396 + 5171076 = 2586^2 + 2274^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (11858479) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 82279 + ... + 82422.

Almost surely, 2^11858472 is an apocalyptic number.

11858472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11858472 is an abundant number, since it is smaller than the sum of its proper divisors (20258418).

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

11858472 is a wasteful number, since it uses less digits than its factorization.

11858472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164713 (or 164706 counting only the distinct ones).

The product of its digits is 17920, while the sum is 36.

The square root of 11858472 is about 3443.6132186992. The cubic root of 11858472 is about 228.0392360915.

The spelling of 11858472 in words is "eleven million, eight hundred fifty-eight thousand, four hundred seventy-two".