49131720 has 192 divisors, whose sum is σ = 183643200. Its totient is φ = 11266560.

The previous prime is 49131697. The next prime is 49131763. The reversal of 49131720 is 2713194.

49131720 is a `hidden beast` number, since 491 + 3 + 172 + 0 = 666.

49131720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 74914 + ... + 75566.

It is an arithmetic number, because the mean of its divisors is an integer number (956475).

Almost surely, 2^49131720 is an apocalyptic number.

49131720 is a gapful number since it is divisible by the number (40) 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 49131720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91821600).

49131720 is an abundant number, since it is smaller than the sum of its proper divisors (134511480).

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

49131720 is a wasteful number, since it uses less digits than its factorization.

49131720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700 (or 693 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 49131720 is about 7009.4022569688. The cubic root of 49131720 is about 366.2581713359.

It can be divided in two parts, 49 and 131720, that added together give a square (131769 = 363²).

The spelling of 49131720 in words is "forty-nine million, one hundred thirty-one thousand, seven hundred twenty".