49217220 has 288 divisors, whose sum is σ = 179786880. Its totient is φ = 11197440.

The previous prime is 49217219. The next prime is 49217249. The reversal of 49217220 is 2271294.

49217220 is a `hidden beast` number, since 492 + 172 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1200400 + ... + 1200440.

It is an arithmetic number, because the mean of its divisors is an integer number (624260).

Almost surely, 2^49217220 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 49217220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89893440).

49217220 is an abundant number, since it is smaller than the sum of its proper divisors (130569660).

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

49217220 is a wasteful number, since it uses less digits than its factorization.

49217220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97 (or 83 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 49217220 is about 7015.4985567670. The cubic root of 49217220 is about 366.4705048084.

The spelling of 49217220 in words is "forty-nine million, two hundred seventeen thousand, two hundred twenty".