49827978 has 24 divisors (see below), whose sum is σ = 109792800. Its totient is φ = 16327464.

The previous prime is 49827961. The next prime is 49827983. The reversal of 49827978 is 87972894.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22398 + ... + 24521.

It is an arithmetic number, because the mean of its divisors is an integer number (4574700).

Almost surely, 2^49827978 is an apocalyptic number.

49827978 is an abundant number, since it is smaller than the sum of its proper divisors (59964822).

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

49827978 is a wasteful number, since it uses less digits than its factorization.

49827978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46986 (or 46983 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 54.

The square root of 49827978 is about 7058.8935393587. The cubic root of 49827978 is about 367.9801747748.

It can be divided in two parts, 49827 and 978, that added together give a palindrome (50805).

The spelling of 49827978 in words is "forty-nine million, eight hundred twenty-seven thousand, nine hundred seventy-eight".