18244472 has 8 divisors (see below), whose sum is σ = 34208400. Its totient is φ = 9122232.

The previous prime is 18244469. The next prime is 18244531. The reversal of 18244472 is 27444281.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1140272 + ... + 1140287.

It is an arithmetic number, because the mean of its divisors is an integer number (4276050).

Almost surely, 2^18244472 is an apocalyptic number.

It is an amenable number.

18244472 is a deficient number, since it is larger than the sum of its proper divisors (15963928).

18244472 is a wasteful number, since it uses less digits than its factorization.

18244472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2280565 (or 2280561 counting only the distinct ones).

The product of its digits is 14336, while the sum is 32.

The square root of 18244472 is about 4271.3548201946. The cubic root of 18244472 is about 263.2552856705.

It can be divided in two parts, 18244 and 472, that multiplied together give a palindrome (8611168).

The spelling of 18244472 in words is "eighteen million, two hundred forty-four thousand, four hundred seventy-two".