47780866 has 16 divisors (see below), whose sum is σ = 82184256. Its totient is φ = 20408976.

The previous prime is 47780819. The next prime is 47780881. The reversal of 47780866 is 66808774.

It is a super-2 number, since 2×47780866² = 4566022311419912, 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, 1261 + ... + 9856.

It is an arithmetic number, because the mean of its divisors is an integer number (5136516).

Almost surely, 2^47780866 is an apocalyptic number.

47780866 is a deficient number, since it is larger than the sum of its proper divisors (34403390).

47780866 is a wasteful number, since it uses less digits than its factorization.

47780866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11433.

The product of its (nonzero) digits is 451584, while the sum is 46.

The square root of 47780866 is about 6912.3705051162. The cubic root of 47780866 is about 362.8702291204.

The spelling of 47780866 in words is "forty-seven million, seven hundred eighty thousand, eight hundred sixty-six".