49178820 has 24 divisors (see below), whose sum is σ = 137700864. Its totient is φ = 13114336.

The previous prime is 49178797. The next prime is 49178839. The reversal of 49178820 is 2887194.

49178820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 409764 + ... + 409883.

It is an arithmetic number, because the mean of its divisors is an integer number (5737536).

Almost surely, 2^49178820 is an apocalyptic number.

It is an amenable number.

49178820 is an abundant number, since it is smaller than the sum of its proper divisors (88522044).

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

49178820 is a wasteful number, since it uses less digits than its factorization.

49178820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819659 (or 819657 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 49178820 is about 7012.7612250810. The cubic root of 49178820 is about 366.3751714486.

The spelling of 49178820 in words is "forty-nine million, one hundred seventy-eight thousand, eight hundred twenty".