48931218 has 48 divisors (see below), whose sum is σ = 121694976. Its totient is φ = 13919040.

The previous prime is 48931199. The next prime is 48931241. The reversal of 48931218 is 81213984.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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, 33430 + ... + 34862.

It is an arithmetic number, because the mean of its divisors is an integer number (2535312).

Almost surely, 2^48931218 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 48931218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60847488).

48931218 is an abundant number, since it is smaller than the sum of its proper divisors (72763758).

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

48931218 is a wasteful number, since it uses less digits than its factorization.

48931218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1719 (or 1716 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 48931218 is about 6995.0852746768. The cubic root of 48931218 is about 365.7592701681.

The spelling of 48931218 in words is "forty-eight million, nine hundred thirty-one thousand, two hundred eighteen".