49721738 has 16 divisors (see below), whose sum is σ = 82899936. Its totient is φ = 22173840.

The previous prime is 49721713. The next prime is 49721741. The reversal of 49721738 is 83712794.

It is a junction number, because it is equal to n+sod(n) for n = 49721695 and 49721704.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20156 + ... + 22487.

It is an arithmetic number, because the mean of its divisors is an integer number (5181246).

Almost surely, 2^49721738 is an apocalyptic number.

49721738 is a deficient number, since it is larger than the sum of its proper divisors (33178198).

49721738 is a wasteful number, since it uses less digits than its factorization.

49721738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42709.

The product of its digits is 84672, while the sum is 41.

The square root of 49721738 is about 7051.3642651617. The cubic root of 49721738 is about 367.7184608206.

The spelling of 49721738 in words is "forty-nine million, seven hundred twenty-one thousand, seven hundred thirty-eight".