47840285 has 24 divisors (see below), whose sum is σ = 61541376. Its totient is φ = 35663040.

The previous prime is 47840279. The next prime is 47840339. The reversal of 47840285 is 58204874.

It is not a de Polignac number, because 47840285 - 2⁴ = 47840269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 130172 + ... + 130538.

It is an arithmetic number, because the mean of its divisors is an integer number (2564224).

Almost surely, 2^47840285 is an apocalyptic number.

It is an amenable number.

47840285 is a deficient number, since it is larger than the sum of its proper divisors (13701091).

47840285 is a wasteful number, since it uses less digits than its factorization.

47840285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461 (or 432 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 38.

The square root of 47840285 is about 6916.6671887550. The cubic root of 47840285 is about 363.0205853641.

The spelling of 47840285 in words is "forty-seven million, eight hundred forty thousand, two hundred eighty-five".