18906232 has 16 divisors (see below), whose sum is σ = 35497800. Its totient is φ = 9440160.

The previous prime is 18906221. The next prime is 18906241. The reversal of 18906232 is 23260981.

It is a junction number, because it is equal to n+sod(n) for n = 18906194 and 18906203.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7807 + ... + 9937.

Almost surely, 2^18906232 is an apocalyptic number.

It is an amenable number.

18906232 is a deficient number, since it is larger than the sum of its proper divisors (16591568).

18906232 is a wasteful number, since it uses less digits than its factorization.

18906232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3246 (or 3242 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 18906232 is about 4348.1297128766. The cubic root of 18906232 is about 266.4004746480.

It can be divided in two parts, 1890623 and 2, that added together give a square (1890625 = 1375²).

The spelling of 18906232 in words is "eighteen million, nine hundred six thousand, two hundred thirty-two".