49278380 has 12 divisors (see below), whose sum is σ = 103484640. Its totient is φ = 19711344.

The previous prime is 49278377. The next prime is 49278389. The reversal of 49278380 is 8387294.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (49278389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1231940 + ... + 1231979.

It is an arithmetic number, because the mean of its divisors is an integer number (8623720).

Almost surely, 2^49278380 is an apocalyptic number.

It is an amenable number.

49278380 is an abundant number, since it is smaller than the sum of its proper divisors (54206260).

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

49278380 is a wasteful number, since it uses less digits than its factorization.

49278380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2463928 (or 2463926 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 49278380 is about 7019.8561238817. The cubic root of 49278380 is about 366.6222407148.

The spelling of 49278380 in words is "forty-nine million, two hundred seventy-eight thousand, three hundred eighty".