47143018 has 16 divisors (see below), whose sum is σ = 76645800. Its totient is φ = 21617856.

The previous prime is 47143001. The next prime is 47143037. The reversal of 47143018 is 81034174.

It can be written as a sum of positive squares in 4 ways, for example, as 40157569 + 6985449 = 6337^2 + 2643^2 .

It is a super-2 number, since 2×47143018² = 4444928292296648, 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, 1693 + ... + 9856.

Almost surely, 2^47143018 is an apocalyptic number.

47143018 is a deficient number, since it is larger than the sum of its proper divisors (29502782).

47143018 is a wasteful number, since it uses less digits than its factorization.

47143018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11721.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 47143018 is about 6866.0773371700. The cubic root of 47143018 is about 361.2482849342.

The spelling of 47143018 in words is "forty-seven million, one hundred forty-three thousand, eighteen".