18006456 has 32 divisors (see below), whose sum is σ = 48479760. Its totient is φ = 5540352.

The previous prime is 18006431. The next prime is 18006479. The reversal of 18006456 is 65460081.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28545 + ... + 29168.

Almost surely, 2^18006456 is an apocalyptic number.

It is an amenable number.

18006456 is an abundant number, since it is smaller than the sum of its proper divisors (30473304).

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

18006456 is a wasteful number, since it uses less digits than its factorization.

18006456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57735 (or 57731 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 18006456 is about 4243.4014658055. The cubic root of 18006456 is about 262.1054680950.

It can be divided in two parts, 1800 and 6456, that added together give a triangular number (8256 = T₁₂₈).

The spelling of 18006456 in words is "eighteen million, six thousand, four hundred fifty-six".