47840644 has 24 divisors (see below), whose sum is σ = 87615360. Its totient is φ = 22857032.

The previous prime is 47840641. The next prime is 47840659. The reversal of 47840644 is 44604874.

It is not an unprimeable number, because it can be changed into a prime (47840641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48177 + ... + 49159.

It is an arithmetic number, because the mean of its divisors is an integer number (3650640).

Almost surely, 2^47840644 is an apocalyptic number.

It is an amenable number.

47840644 is a deficient number, since it is larger than the sum of its proper divisors (39774716).

47840644 is an equidigital number, since it uses as much as digits as its factorization.

47840644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056 (or 1008 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 37.

The square root of 47840644 is about 6916.6931405116. The cubic root of 47840644 is about 363.0214934137.

It can be divided in two parts, 47840 and 644, that added together give a palindrome (48484).

The spelling of 47840644 in words is "forty-seven million, eight hundred forty thousand, six hundred forty-four".