49539728 has 20 divisors (see below), whose sum is σ = 109695360. Its totient is φ = 21231264.

The previous prime is 49539727. The next prime is 49539757. The reversal of 49539728 is 82793594.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (49539727) 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, 221048 + ... + 221271.

It is an arithmetic number, because the mean of its divisors is an integer number (5484768).

Almost surely, 2^49539728 is an apocalyptic number.

It is an amenable number.

49539728 is an abundant number, since it is smaller than the sum of its proper divisors (60155632).

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

49539728 is a wasteful number, since it uses less digits than its factorization.

49539728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442334 (or 442328 counting only the distinct ones).

The product of its digits is 544320, while the sum is 47.

The square root of 49539728 is about 7038.4464194878. The cubic root of 49539728 is about 367.2692255921.

The spelling of 49539728 in words is "forty-nine million, five hundred thirty-nine thousand, seven hundred twenty-eight".