18296440 has 16 divisors (see below), whose sum is σ = 41167080. Its totient is φ = 7318560.

The previous prime is 18296429. The next prime is 18296459. The reversal of 18296440 is 4469281.

It is a junction number, because it is equal to n+sod(n) for n = 18296396 and 18296405.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 228666 + ... + 228745.

Almost surely, 2^18296440 is an apocalyptic number.

18296440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18296440 is an abundant number, since it is smaller than the sum of its proper divisors (22870640).

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

18296440 is a wasteful number, since it uses less digits than its factorization.

18296440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457422 (or 457418 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 18296440 is about 4277.4338101249. The cubic root of 18296440 is about 263.5050029836.

The spelling of 18296440 in words is "eighteen million, two hundred ninety-six thousand, four hundred forty".