18080742 has 32 divisors (see below), whose sum is σ = 38304000. Its totient is φ = 5673888.

The previous prime is 18080731. The next prime is 18080743. The reversal of 18080742 is 24708081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18080743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22288 + ... + 23084.

It is an arithmetic number, because the mean of its divisors is an integer number (1197000).

Almost surely, 2^18080742 is an apocalyptic number.

18080742 is an abundant number, since it is smaller than the sum of its proper divisors (20223258).

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

18080742 is a wasteful number, since it uses less digits than its factorization.

18080742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020.

The product of its (nonzero) digits is 3584, while the sum is 30.

The square root of 18080742 is about 4252.1455760592. The cubic root of 18080742 is about 262.4654140374.

The spelling of 18080742 in words is "eighteen million, eighty thousand, seven hundred forty-two".