49747440 has 160 divisors (see below), whose sum is σ = 166328640. Its totient is φ = 12255232.

The previous prime is 49747429. The next prime is 49747469. The reversal of 49747440 is 4474794.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 363052 + ... + 363188.

It is an arithmetic number, because the mean of its divisors is an integer number (1039554).

Almost surely, 2^49747440 is an apocalyptic number.

49747440 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 49747440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83164320).

49747440 is an abundant number, since it is smaller than the sum of its proper divisors (116581200).

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

49747440 is a wasteful number, since it uses less digits than its factorization.

49747440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259 (or 253 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 39.

The square root of 49747440 is about 7053.1865139099. The cubic root of 49747440 is about 367.7818098523.

The spelling of 49747440 in words is "forty-nine million, seven hundred forty-seven thousand, four hundred forty".