18304768 has 18 divisors (see below), whose sum is σ = 36538544. Its totient is φ = 9152256.

The previous prime is 18304763. The next prime is 18304777. The reversal of 18304768 is 86740381.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18304763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35496 + ... + 36007.

Almost surely, 2^18304768 is an apocalyptic number.

It is an amenable number.

18304768 is a deficient number, since it is larger than the sum of its proper divisors (18233776).

18304768 is an frugal number, since it uses more digits than its factorization.

18304768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71519 (or 71505 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 18304768 is about 4278.4071802483. The cubic root of 18304768 is about 263.5449768217.

The spelling of 18304768 in words is "eighteen million, three hundred four thousand, seven hundred sixty-eight".