49817620 has 48 divisors (see below), whose sum is σ = 113702400. Its totient is φ = 18264960.

The previous prime is 49817617. The next prime is 49817629. The reversal of 49817620 is 2671894.

49817620 = T₈₀ + T₈₁ + ... + T₆₆₈.

It is a self number, because there is not a number n which added to its sum of digits gives 49817620.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49817629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9666 + ... + 13894.

It is an arithmetic number, because the mean of its divisors is an integer number (2368800).

Almost surely, 2^49817620 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49817620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56851200).

49817620 is an abundant number, since it is smaller than the sum of its proper divisors (63884780).

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

49817620 is a wasteful number, since it uses less digits than its factorization.

49817620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4288 (or 4286 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 49817620 is about 7058.1598168361. The cubic root of 49817620 is about 367.9546750258.

The spelling of 49817620 in words is "forty-nine million, eight hundred seventeen thousand, six hundred twenty".