18233472 has 64 divisors (see below), whose sum is σ = 49008960. Its totient is φ = 6005760.

The previous prime is 18233471. The next prime is 18233473. The reversal of 18233472 is 27433281.

It is an interprime number because it is at equal distance from previous prime (18233471) and next prime (18233473).

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (18233471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39322 + ... + 39782.

It is an arithmetic number, because the mean of its divisors is an integer number (765765).

Almost surely, 2^18233472 is an apocalyptic number.

18233472 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 18233472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24504480).

18233472 is an abundant number, since it is smaller than the sum of its proper divisors (30775488).

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

18233472 is a wasteful number, since it uses less digits than its factorization.

18233472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581 (or 569 counting only the distinct ones).

The product of its digits is 8064, while the sum is 30.

The square root of 18233472 is about 4270.0669783974. The cubic root of 18233472 is about 263.2023675351.

The spelling of 18233472 in words is "eighteen million, two hundred thirty-three thousand, four hundred seventy-two".