49649868 has 48 divisors (see below), whose sum is σ = 129276000. Its totient is φ = 16478784.

The previous prime is 49649861. The next prime is 49649891. The reversal of 49649868 is 86894694.

49649868 is a `hidden beast` number, since 4 + 96 + 498 + 68 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (49649861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28198 + ... + 29906.

It is an arithmetic number, because the mean of its divisors is an integer number (2693250).

Almost surely, 2^49649868 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 49649868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64638000).

49649868 is an abundant number, since it is smaller than the sum of its proper divisors (79626132).

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

49649868 is a wasteful number, since it uses less digits than its factorization.

49649868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1991 (or 1983 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 54.

The square root of 49649868 is about 7046.2662453245. The cubic root of 49649868 is about 367.5412032103.

The spelling of 49649868 in words is "forty-nine million, six hundred forty-nine thousand, eight hundred sixty-eight".