49640648 has 36 divisors (see below), whose sum is σ = 96926865. Its totient is φ = 23833888.

The previous prime is 49640639. The next prime is 49640659. The reversal of 49640648 is 84604694.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 47087044 + 2553604 = 6862^2 + 1598^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=4982.

It is a super-3 number, since 3×49640648³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 936590 + ... + 936642.

Almost surely, 2^49640648 is an apocalyptic number.

It is an amenable number.

49640648 is a deficient number, since it is larger than the sum of its proper divisors (47286217).

49640648 is an equidigital number, since it uses as much as digits as its factorization.

49640648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206 (or 102 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 41.

The square root of 49640648 is about 7045.6119677428. The cubic root of 49640648 is about 367.5184509532.

Multiplying 49640648 by its product of nonzero digits (165888), we get a square (8234787815424 = 2869632²).

The spelling of 49640648 in words is "forty-nine million, six hundred forty thousand, six hundred forty-eight".