49980640 has 96 divisors (see below), whose sum is σ = 127643040. Its totient is φ = 18432000.

The previous prime is 49980617. The next prime is 49980653. The reversal of 49980640 is 4608994.

49980640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 49980593 and 49980602.

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 15 ways as a sum of consecutive naturals, for example, 124440 + ... + 124840.

It is an arithmetic number, because the mean of its divisors is an integer number (1329615).

Almost surely, 2^49980640 is an apocalyptic number.

49980640 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 49980640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63821520).

49980640 is an abundant number, since it is smaller than the sum of its proper divisors (77662400).

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

49980640 is a wasteful number, since it uses less digits than its factorization.

49980640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476 (or 468 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 49980640 is about 7069.6987205962. The cubic root of 49980640 is about 368.3555951592.

The spelling of 49980640 in words is "forty-nine million, nine hundred eighty thousand, six hundred forty".