49771800 has 192 divisors, whose sum is σ = 184884000. Its totient is φ = 12234240.

The previous prime is 49771783. The next prime is 49771807. The reversal of 49771800 is 817794.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49771807) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 69846 + ... + 70554.

Almost surely, 2^49771800 is an apocalyptic number.

49771800 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 49771800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92442000).

49771800 is an abundant number, since it is smaller than the sum of its proper divisors (135112200).

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

49771800 is a wasteful number, since it uses less digits than its factorization.

49771800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747 (or 732 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 49771800 is about 7054.9131816061. The cubic root of 49771800 is about 367.8418310509.

The spelling of 49771800 in words is "forty-nine million, seven hundred seventy-one thousand, eight hundred".