49621220 has 48 divisors (see below), whose sum is σ = 114222528. Its totient is φ = 17957760.

The previous prime is 49621219. The next prime is 49621267. The reversal of 49621220 is 2212694.

49621220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 49621220.

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 15 ways as a sum of consecutive naturals, for example, 61862 + ... + 62658.

It is an arithmetic number, because the mean of its divisors is an integer number (2379636).

Almost surely, 2^49621220 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 49621220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57111264).

49621220 is an abundant number, since it is smaller than the sum of its proper divisors (64601308).

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

49621220 is a wasteful number, since it uses less digits than its factorization.

49621220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100 (or 1098 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 49621220 is about 7044.2331023327. The cubic root of 49621220 is about 367.4704991205.

The spelling of 49621220 in words is "forty-nine million, six hundred twenty-one thousand, two hundred twenty".