49957740 has 144 divisors (see below), whose sum is σ = 178913280. Its totient is φ = 11041920.

The previous prime is 49957723. The next prime is 49957753. The reversal of 49957740 is 4775994.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 38421 + ... + 39699.

Almost surely, 2^49957740 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49957740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89456640).

49957740 is an abundant number, since it is smaller than the sum of its proper divisors (128955540).

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

49957740 is a wasteful number, since it uses less digits than its factorization.

49957740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1332 (or 1327 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The square root of 49957740 is about 7068.0789469275. The cubic root of 49957740 is about 368.2993291614.

The spelling of 49957740 in words is "forty-nine million, nine hundred fifty-seven thousand, seven hundred forty".