49898220 has 96 divisors (see below), whose sum is σ = 146012160. Its totient is φ = 12718080.

The previous prime is 49898207. The next prime is 49898221. The reversal of 49898220 is 2289894.

49898220 = 178² + 179² + ... + 537².

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (49898221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 258444 + ... + 258636.

It is an arithmetic number, because the mean of its divisors is an integer number (1520960).

Almost surely, 2^49898220 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 49898220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73006080).

49898220 is an abundant number, since it is smaller than the sum of its proper divisors (96113940).

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

49898220 is a wasteful number, since it uses less digits than its factorization.

49898220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375 (or 373 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 49898220 is about 7063.8672127950. The cubic root of 49898220 is about 368.1530062391.

The spelling of 49898220 in words is "forty-nine million, eight hundred ninety-eight thousand, two hundred twenty".