48591816 has 128 divisors (see below), whose sum is σ = 157516800. Its totient is φ = 12130560.

The previous prime is 48591799. The next prime is 48591821. The reversal of 48591816 is 61819584.

It is a super-2 number, since 2×48591816² = 4722329164355712, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40911 + ... + 42081.

It is an arithmetic number, because the mean of its divisors is an integer number (1230600).

Almost surely, 2^48591816 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 48591816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78758400).

48591816 is an abundant number, since it is smaller than the sum of its proper divisors (108924984).

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

48591816 is a wasteful number, since it uses less digits than its factorization.

48591816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1219 (or 1215 counting only the distinct ones).

The product of its digits is 69120, while the sum is 42.

The square root of 48591816 is about 6970.7830263178. The cubic root of 48591816 is about 364.9116343289.

The spelling of 48591816 in words is "forty-eight million, five hundred ninety-one thousand, eight hundred sixteen".