47780265 has 32 divisors (see below), whose sum is σ = 83744640. Its totient is φ = 23118336.

The previous prime is 47780261. The next prime is 47780279. The reversal of 47780265 is 56208774.

It is not a de Polignac number, because 47780265 - 2² = 47780261 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (39).

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 in 31 ways as a sum of consecutive naturals, for example, 9429 + ... + 13581.

It is an arithmetic number, because the mean of its divisors is an integer number (2617020).

Almost surely, 2^47780265 is an apocalyptic number.

It is an amenable number.

47780265 is a deficient number, since it is larger than the sum of its proper divisors (35964375).

47780265 is a wasteful number, since it uses less digits than its factorization.

47780265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4233.

The product of its (nonzero) digits is 94080, while the sum is 39.

The square root of 47780265 is about 6912.3270321940. The cubic root of 47780265 is about 362.8687076891.

The spelling of 47780265 in words is "forty-seven million, seven hundred eighty thousand, two hundred sixty-five".