49801780 has 48 divisors (see below), whose sum is σ = 120508416. Its totient is φ = 16934400.

The previous prime is 49801777. The next prime is 49801799. The reversal of 49801780 is 8710894.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16380 + ... + 19180.

It is an arithmetic number, because the mean of its divisors is an integer number (2510592).

Almost surely, 2^49801780 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 49801780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60254208).

49801780 is an abundant number, since it is smaller than the sum of its proper divisors (70706636).

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

49801780 is a wasteful number, since it uses less digits than its factorization.

49801780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2944 (or 2942 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 49801780 is about 7057.0376221188. The cubic root of 49801780 is about 367.9156726280.

The spelling of 49801780 in words is "forty-nine million, eight hundred one thousand, seven hundred eighty".