18649232 has 40 divisors (see below), whose sum is σ = 41515200. Its totient is φ = 7949952.

The previous prime is 18649231. The next prime is 18649273. The reversal of 18649232 is 23294681.

It is a junction number, because it is equal to n+sod(n) for n = 18649192 and 18649201.

It is not an unprimeable number, because it can be changed into a prime (18649231) 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, 29819 + ... + 30437.

It is an arithmetic number, because the mean of its divisors is an integer number (1037880).

Almost surely, 2^18649232 is an apocalyptic number.

It is an amenable number.

18649232 is an abundant number, since it is smaller than the sum of its proper divisors (22865968).

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

18649232 is a wasteful number, since it uses less digits than its factorization.

18649232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 903 (or 897 counting only the distinct ones).

The product of its digits is 20736, while the sum is 35.

The square root of 18649232 is about 4318.4756569882. The cubic root of 18649232 is about 265.1878672579.

It can be divided in two parts, 18649 and 232, that added together give a palindrome (18881).

The spelling of 18649232 in words is "eighteen million, six hundred forty-nine thousand, two hundred thirty-two".