18854472 has 128 divisors (see below), whose sum is σ = 59270400. Its totient is φ = 4866048.

The previous prime is 18854461. The next prime is 18854477. The reversal of 18854472 is 27445881.

It is a happy number.

It is a super-2 number, since 2×18854472² = 710982228797568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 18854472.

It is not an unprimeable number, because it can be changed into a prime (18854477) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 194328 + ... + 194424.

It is an arithmetic number, because the mean of its divisors is an integer number (463050).

Almost surely, 2^18854472 is an apocalyptic number.

18854472 is a gapful number since it is divisible by the number (12) 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 18854472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29635200).

18854472 is an abundant number, since it is smaller than the sum of its proper divisors (40415928).

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

18854472 is a wasteful number, since it uses less digits than its factorization.

18854472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215 (or 211 counting only the distinct ones).

The product of its digits is 71680, while the sum is 39.

The square root of 18854472 is about 4342.1736492222. The cubic root of 18854472 is about 266.1571423414.

The spelling of 18854472 in words is "eighteen million, eight hundred fifty-four thousand, four hundred seventy-two".