18024340 has 24 divisors (see below), whose sum is σ = 38418912. Its totient is φ = 7101600.

The previous prime is 18024337. The next prime is 18024343. The reversal of 18024340 is 4342081.

18024340 = T₃₁₉ + T₃₂₀ + ... + T₅₁₉.

It is an interprime number because it is at equal distance from previous prime (18024337) and next prime (18024343).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18024343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5386 + ... + 8065.

It is an arithmetic number, because the mean of its divisors is an integer number (1600788).

Almost surely, 2^18024340 is an apocalyptic number.

18024340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18024340 is an abundant number, since it is smaller than the sum of its proper divisors (20394572).

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

18024340 is a wasteful number, since it uses less digits than its factorization.

18024340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13527 (or 13525 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 18024340 is about 4245.5082145722. The cubic root of 18024340 is about 262.1922137077.

The spelling of 18024340 in words is "eighteen million, twenty-four thousand, three hundred forty".