47780266 has 4 divisors (see below), whose sum is σ = 71670402. Its totient is φ = 23890132.

The previous prime is 47780261. The next prime is 47780279. The reversal of 47780266 is 66208774.

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., 45900625 + 1879641 = 6775^2 + 1371^2 .

It is not an unprimeable number, because it can be changed into a prime (47780261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11945065 + ... + 11945068.

Almost surely, 2^47780266 is an apocalyptic number.

47780266 is a deficient number, since it is larger than the sum of its proper divisors (23890136).

47780266 is a wasteful number, since it uses less digits than its factorization.

47780266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23890135.

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

The square root of 47780266 is about 6912.3271045285. The cubic root of 47780266 is about 362.8687102206.

The spelling of 47780266 in words is "forty-seven million, seven hundred eighty thousand, two hundred sixty-six".