18088742 has 24 divisors (see below), whose sum is σ = 31826520. Its totient is φ = 7687680.

The previous prime is 18088729. The next prime is 18088769. The reversal of 18088742 is 24788081.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 18088696 and 18088705.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12134 + ... + 13542.

It is an arithmetic number, because the mean of its divisors is an integer number (1326105).

Almost surely, 2^18088742 is an apocalyptic number.

18088742 is a deficient number, since it is larger than the sum of its proper divisors (13737778).

18088742 is a wasteful number, since it uses less digits than its factorization.

18088742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1556 (or 1549 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 38.

The square root of 18088742 is about 4253.0861735921. The cubic root of 18088742 is about 262.5041184539.

The spelling of 18088742 in words is "eighteen million, eighty-eight thousand, seven hundred forty-two".