49805220 has 48 divisors (see below), whose sum is σ = 143958528. Its totient is φ = 12852480.

The previous prime is 49805191. The next prime is 49805233. The reversal of 49805220 is 2250894.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11529 + ... + 15248.

It is an arithmetic number, because the mean of its divisors is an integer number (2999136).

Almost surely, 2^49805220 is an apocalyptic number.

It is an amenable number.

49805220 is an abundant number, since it is smaller than the sum of its proper divisors (94153308).

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

49805220 is a wasteful number, since it uses less digits than its factorization.

49805220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26820 (or 26818 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 49805220 is about 7057.2813462409. The cubic root of 49805220 is about 367.9241435487.

Subtracting from 49805220 its sum of digits (30), we obtain a triangular number (49805190 = T₉₉₈₀).

The spelling of 49805220 in words is "forty-nine million, eight hundred five thousand, two hundred twenty".