18272541 has 12 divisors (see below), whose sum is σ = 28341312. Its totient is φ = 10441368.

The previous prime is 18272539. The next prime is 18272543. The reversal of 18272541 is 14527281.

It is an interprime number because it is at equal distance from previous prime (18272539) and next prime (18272543).

It is not a de Polignac number, because 18272541 - 2¹ = 18272539 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 18272499 and 18272508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18272543) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62005 + ... + 62298.

It is an arithmetic number, because the mean of its divisors is an integer number (2361776).

Almost surely, 2^18272541 is an apocalyptic number.

It is an amenable number.

18272541 is a deficient number, since it is larger than the sum of its proper divisors (10068771).

18272541 is a wasteful number, since it uses less digits than its factorization.

18272541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124320 (or 124313 counting only the distinct ones).

The product of its digits is 4480, while the sum is 30.

The square root of 18272541 is about 4274.6392830273. The cubic root of 18272541 is about 263.3902220022.

The spelling of 18272541 in words is "eighteen million, two hundred seventy-two thousand, five hundred forty-one".