49805840 has 160 divisors (see below), whose sum is σ = 144752640. Its totient is φ = 15552000.

The previous prime is 49805837. The next prime is 49805881. The reversal of 49805840 is 4850894.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 49805794 and 49805803.

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, 329765 + ... + 329915.

It is an arithmetic number, because the mean of its divisors is an integer number (904704).

Almost surely, 2^49805840 is an apocalyptic number.

49805840 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 49805840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72376320).

49805840 is an abundant number, since it is smaller than the sum of its proper divisors (94946800).

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

49805840 is a wasteful number, since it uses less digits than its factorization.

49805840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221 (or 215 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 49805840 is about 7057.3252723677. The cubic root of 49805840 is about 367.9256702429.

The spelling of 49805840 in words is "forty-nine million, eight hundred five thousand, eight hundred forty".