49309278 has 16 divisors (see below), whose sum is σ = 98775696. Its totient is φ = 16410240.

The previous prime is 49309243. The next prime is 49309279. The reversal of 49309278 is 87290394.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49309279) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2251 + ... + 10182.

It is an arithmetic number, because the mean of its divisors is an integer number (6173481).

Almost surely, 2^49309278 is an apocalyptic number.

49309278 is an abundant number, since it is smaller than the sum of its proper divisors (49466418).

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

49309278 is a wasteful number, since it uses less digits than its factorization.

49309278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13099.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 49309278 is about 7022.0565363717. The cubic root of 49309278 is about 366.6988498840.

The spelling of 49309278 in words is "forty-nine million, three hundred nine thousand, two hundred seventy-eight".