47818864 has 40 divisors (see below), whose sum is σ = 96283520. Its totient is φ = 22982400.

The previous prime is 47818861. The next prime is 47818867. The reversal of 47818864 is 46881874.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (47818861) and next prime (47818867).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47818861) 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, 113374 + ... + 113794.

It is an arithmetic number, because the mean of its divisors is an integer number (2407088).

Almost surely, 2^47818864 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 47818864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48141760).

47818864 is an abundant number, since it is smaller than the sum of its proper divisors (48464656).

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

47818864 is a wasteful number, since it uses less digits than its factorization.

47818864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689 (or 683 counting only the distinct ones).

The product of its digits is 344064, while the sum is 46.

The square root of 47818864 is about 6915.1185094689. The cubic root of 47818864 is about 362.9663951568.

The spelling of 47818864 in words is "forty-seven million, eight hundred eighteen thousand, eight hundred sixty-four".