49851720 has 128 divisors (see below), whose sum is σ = 171648000. Its totient is φ = 12856320.

The previous prime is 49851713. The next prime is 49851743. The reversal of 49851720 is 2715894.

49851720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a Harshad number since it is a multiple of its sum of digits (36).

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 31 ways as a sum of consecutive naturals, for example, 32736 + ... + 34224.

It is an arithmetic number, because the mean of its divisors is an integer number (1341000).

Almost surely, 2^49851720 is an apocalyptic number.

49851720 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 49851720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85824000).

49851720 is an abundant number, since it is smaller than the sum of its proper divisors (121796280).

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

49851720 is a wasteful number, since it uses less digits than its factorization.

49851720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1540 (or 1530 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 49851720 is about 7060.5750474023. The cubic root of 49851720 is about 368.0386104731.

The spelling of 49851720 in words is "forty-nine million, eight hundred fifty-one thousand, seven hundred twenty".