49728591 has 24 divisors (see below), whose sum is σ = 81066960. Its totient is φ = 29097600.

The previous prime is 49728559. The next prime is 49728607. The reversal of 49728591 is 19582794.

It is not a de Polignac number, because 49728591 - 2⁵ = 49728559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49723591) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5790 + ... + 11531.

It is an arithmetic number, because the mean of its divisors is an integer number (3377790).

Almost surely, 2^49728591 is an apocalyptic number.

49728591 is a deficient number, since it is larger than the sum of its proper divisors (31338369).

49728591 is a wasteful number, since it uses less digits than its factorization.

49728591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17367 (or 17364 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 49728591 is about 7051.8501827535. The cubic root of 49728591 is about 367.7353538936.

The spelling of 49728591 in words is "forty-nine million, seven hundred twenty-eight thousand, five hundred ninety-one".