49619640 has 128 divisors (see below), whose sum is σ = 179136000. Its totient is φ = 10741248.

The previous prime is 49619611. The next prime is 49619653. The reversal of 49619640 is 4691694.

49619640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14406 + ... + 17514.

It is an arithmetic number, because the mean of its divisors is an integer number (1399500).

Almost surely, 2^49619640 is an apocalyptic number.

49619640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49619640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89568000).

49619640 is an abundant number, since it is smaller than the sum of its proper divisors (129516360).

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

49619640 is a wasteful number, since it uses less digits than its factorization.

49619640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3149 (or 3145 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 49619640 is about 7044.1209529650. The cubic root of 49619640 is about 367.4665988432.

The spelling of 49619640 in words is "forty-nine million, six hundred nineteen thousand, six hundred forty".