47460778 has 4 divisors (see below), whose sum is σ = 71191170. Its totient is φ = 23730388.

The previous prime is 47460761. The next prime is 47460779. The reversal of 47460778 is 87706474.

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., 45603009 + 1857769 = 6753^2 + 1363^2 .

It is not an unprimeable number, because it can be changed into a prime (47460779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11865193 + ... + 11865196.

Almost surely, 2^47460778 is an apocalyptic number.

47460778 is a deficient number, since it is larger than the sum of its proper divisors (23730392).

47460778 is a wasteful number, since it uses less digits than its factorization.

47460778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23730391.

The product of its (nonzero) digits is 263424, while the sum is 43.

The square root of 47460778 is about 6889.1783254609. The cubic root of 47460778 is about 362.0581136417.

The spelling of 47460778 in words is "forty-seven million, four hundred sixty thousand, seven hundred seventy-eight".