49128219 has 48 divisors (see below), whose sum is σ = 83845632. Its totient is φ = 27143424.

The previous prime is 49128199. The next prime is 49128221. The reversal of 49128219 is 91282194.

It is not a de Polignac number, because 49128219 - 2¹¹ = 49126171 is a prime.

It is a super-2 number, since 2×49128219² = 4827163804223922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (49128229) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 434707 + ... + 434819.

It is an arithmetic number, because the mean of its divisors is an integer number (1746784).

Almost surely, 2^49128219 is an apocalyptic number.

49128219 is a deficient number, since it is larger than the sum of its proper divisors (34717413).

49128219 is a wasteful number, since it uses less digits than its factorization.

49128219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296 (or 293 counting only the distinct ones).

The product of its digits is 10368, while the sum is 36.

The square root of 49128219 is about 7009.1525165315. The cubic root of 49128219 is about 366.2494715908.

It can be divided in two parts, 4912 and 8219, that added together give a palindrome (13131).

The spelling of 49128219 in words is "forty-nine million, one hundred twenty-eight thousand, two hundred nineteen".