18240546 has 8 divisors (see below), whose sum is σ = 36481104. Its totient is φ = 6080180.

The previous prime is 18240529. The next prime is 18240577. The reversal of 18240546 is 64504281.

It is a sphenic number, since it is the product of 3 distinct primes.

18240546 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1520040 + ... + 1520051.

It is an arithmetic number, because the mean of its divisors is an integer number (4560138).

Almost surely, 2^18240546 is an apocalyptic number.

18240546 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18240546 is a wasteful number, since it uses less digits than its factorization.

18240546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3040096.

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 18240546 is about 4270.8952223158. The cubic root of 18240546 is about 263.2364011485.

The spelling of 18240546 in words is "eighteen million, two hundred forty thousand, five hundred forty-six".