18212632 has 8 divisors (see below), whose sum is σ = 34148700. Its totient is φ = 9106312.

The previous prime is 18212629. The next prime is 18212639. The reversal of 18212632 is 23621281.

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

It is a junction number, because it is equal to n+sod(n) for n = 18212597 and 18212606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18212639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1138282 + ... + 1138297.

Almost surely, 2^18212632 is an apocalyptic number.

It is an amenable number.

18212632 is a deficient number, since it is larger than the sum of its proper divisors (15936068).

18212632 is a wasteful number, since it uses less digits than its factorization.

18212632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2276585 (or 2276581 counting only the distinct ones).

The product of its digits is 1152, while the sum is 25.

The square root of 18212632 is about 4267.6260379747. The cubic root of 18212632 is about 263.1020533360.

The spelling of 18212632 in words is "eighteen million, two hundred twelve thousand, six hundred thirty-two".