18040296 has 32 divisors (see below), whose sum is σ = 45302400. Its totient is φ = 5986560.

The previous prime is 18040277. The next prime is 18040327. The reversal of 18040296 is 69204081.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

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 7 ways as a sum of consecutive naturals, for example, 4225 + ... + 7343.

It is an arithmetic number, because the mean of its divisors is an integer number (1415700).

Almost surely, 2^18040296 is an apocalyptic number.

It is an amenable number.

18040296 is an abundant number, since it is smaller than the sum of its proper divisors (27262104).

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

18040296 is a wasteful number, since it uses less digits than its factorization.

18040296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3369 (or 3365 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 18040296 is about 4247.3869614152. The cubic root of 18040296 is about 262.2695592135.

It can be divided in two parts, 18040 and 296, that added together give a triangular number (18336 = T₁₉₁).

The spelling of 18040296 in words is "eighteen million, forty thousand, two hundred ninety-six".