49391568 has 60 divisors (see below), whose sum is σ = 138928608. Its totient is φ = 16380480.

The previous prime is 49391567. The next prime is 49391599. The reversal of 49391568 is 86519394.

It is a happy number.

49391568 is a `hidden beast` number, since 493 + 9 + 156 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49391561) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31933 + ... + 33443.

Almost surely, 2^49391568 is an apocalyptic number.

49391568 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49391568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69464304).

49391568 is an abundant number, since it is smaller than the sum of its proper divisors (89537040).

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

49391568 is a wasteful number, since it uses less digits than its factorization.

49391568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1752 (or 1743 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 49391568 is about 7027.9134883691. The cubic root of 49391568 is about 366.9027254958.

The spelling of 49391568 in words is "forty-nine million, three hundred ninety-one thousand, five hundred sixty-eight".