18254780 has 24 divisors (see below), whose sum is σ = 38516352. Its totient is φ = 7267392.

The previous prime is 18254773. The next prime is 18254783. The reversal of 18254780 is 8745281.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 18254780.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18254783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2414 + ... + 6506.

It is an arithmetic number, because the mean of its divisors is an integer number (1604848).

Almost surely, 2^18254780 is an apocalyptic number.

18254780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18254780 is an abundant number, since it is smaller than the sum of its proper divisors (20261572).

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

18254780 is a wasteful number, since it uses less digits than its factorization.

18254780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4325 (or 4323 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 35.

The square root of 18254780 is about 4272.5612927142. The cubic root of 18254780 is about 263.3048554723.

The spelling of 18254780 in words is "eighteen million, two hundred fifty-four thousand, seven hundred eighty".