47072866 has 4 divisors (see below), whose sum is σ = 70609302. Its totient is φ = 23536432.

The previous prime is 47072863. The next prime is 47072867. The reversal of 47072866 is 66827074.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 31304025 + 15768841 = 5595^2 + 3971^2 .

It is not an unprimeable number, because it can be changed into a prime (47072863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11768215 + ... + 11768218.

Almost surely, 2^47072866 is an apocalyptic number.

47072866 is a deficient number, since it is larger than the sum of its proper divisors (23536436).

47072866 is a wasteful number, since it uses less digits than its factorization.

47072866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23536435.

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 47072866 is about 6860.9668414882. The cubic root of 47072866 is about 361.0690086842.

The spelling of 47072866 in words is "forty-seven million, seventy-two thousand, eight hundred sixty-six".