49481664 has 28 divisors (see below), whose sum is σ = 130920744. Its totient is φ = 16493824.

The previous prime is 49481657. The next prime is 49481669. The reversal of 49481664 is 46618494.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49481669) 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, 128667 + ... + 129050.

Almost surely, 2^49481664 is an apocalyptic number.

It is an amenable number.

49481664 is an abundant number, since it is smaller than the sum of its proper divisors (81439080).

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

49481664 is a wasteful number, since it uses less digits than its factorization.

49481664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257732 (or 257722 counting only the distinct ones).

The product of its digits is 165888, while the sum is 42.

The square root of 49481664 is about 7034.3204362611. The cubic root of 49481664 is about 367.1256811541.

The spelling of 49481664 in words is "forty-nine million, four hundred eighty-one thousand, six hundred sixty-four".