49820638 has 16 divisors (see below), whose sum is σ = 85976064. Its totient is φ = 21209400.

The previous prime is 49820633. The next prime is 49820651. The reversal of 49820638 is 83602894.

It is a self number, because there is not a number n which added to its sum of digits gives 49820638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49820633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9670 + ... + 13897.

It is an arithmetic number, because the mean of its divisors is an integer number (5373504).

Almost surely, 2^49820638 is an apocalyptic number.

49820638 is a deficient number, since it is larger than the sum of its proper divisors (36155426).

49820638 is a wasteful number, since it uses less digits than its factorization.

49820638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23727.

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 49820638 is about 7058.3736087005. The cubic root of 49820638 is about 367.9621052268.

The spelling of 49820638 in words is "forty-nine million, eight hundred twenty thousand, six hundred thirty-eight".