49278720 has 144 divisors (see below), whose sum is σ = 161737632. Its totient is φ = 12779520.

The previous prime is 49278703. The next prime is 49278721. The reversal of 49278720 is 2787294.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49278721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157284 + ... + 157596.

It is an arithmetic number, because the mean of its divisors is an integer number (1123178).

Almost surely, 2^49278720 is an apocalyptic number.

49278720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49278720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80868816).

49278720 is an abundant number, since it is smaller than the sum of its proper divisors (112458912).

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

49278720 is a wasteful number, since it uses less digits than its factorization.

49278720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378 (or 364 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 49278720 is about 7019.8803408605. The cubic root of 49278720 is about 366.6230838924.

The spelling of 49278720 in words is "forty-nine million, two hundred seventy-eight thousand, seven hundred twenty".