47840856 has 96 divisors (see below), whose sum is σ = 147374640. Its totient is φ = 12859392.

The previous prime is 47840831. The next prime is 47840861. The reversal of 47840856 is 65804874.

47840856 = 964² + 965² + ... + 1012².

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 18796 + ... + 21188.

Almost surely, 2^47840856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47840856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73687320).

47840856 is an abundant number, since it is smaller than the sum of its proper divisors (99533784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47840856 is a wasteful number, since it uses less digits than its factorization.

47840856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2433 (or 2422 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 42.

The square root of 47840856 is about 6916.7084657372. The cubic root of 47840856 is about 363.0220296415.

The spelling of 47840856 in words is "forty-seven million, eight hundred forty thousand, eight hundred fifty-six".