49220028 has 96 divisors (see below), whose sum is σ = 149963520. Its totient is φ = 13763520.

The previous prime is 49220021. The next prime is 49220071. The reversal of 49220028 is 82002294.

It is a super-2 number, since 2×49220028² = 4845222312641568, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 49219983 and 49220010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49220021) 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, 13851 + ... + 17037.

It is an arithmetic number, because the mean of its divisors is an integer number (1562120).

Almost surely, 2^49220028 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 49220028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74981760).

49220028 is an abundant number, since it is smaller than the sum of its proper divisors (100743492).

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

49220028 is a wasteful number, since it uses less digits than its factorization.

49220028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3224 (or 3216 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 49220028 is about 7015.6986822411. The cubic root of 49220028 is about 366.4774741144.

The spelling of 49220028 in words is "forty-nine million, two hundred twenty thousand, twenty-eight".