18740706 has 16 divisors (see below), whose sum is σ = 37995744. Its totient is φ = 6161184.

The previous prime is 18740677. The next prime is 18740713. The reversal of 18740706 is 60704781.

It is a super-2 number, since 2×18740706² = 702428122756872, which contains 22 as substring.

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, 20956 + ... + 21831.

It is an arithmetic number, because the mean of its divisors is an integer number (2374734).

Almost surely, 2^18740706 is an apocalyptic number.

18740706 is an abundant number, since it is smaller than the sum of its proper divisors (19255038).

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

18740706 is a wasteful number, since it uses less digits than its factorization.

18740706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42865.

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 18740706 is about 4329.0537072206. The cubic root of 18740706 is about 265.6207401578.

The spelling of 18740706 in words is "eighteen million, seven hundred forty thousand, seven hundred six".