49800000 has 168 divisors, whose sum is σ = 166676832. Its totient is φ = 13120000.

The previous prime is 49799993. The next prime is 49800001. The reversal of 49800000 is 894.

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 49800000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49800001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 599959 + ... + 600041.

It is an arithmetic number, because the mean of its divisors is an integer number (992124).

Almost surely, 2^49800000 is an apocalyptic number.

49800000 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 49800000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83338416).

49800000 is an abundant number, since it is smaller than the sum of its proper divisors (116876832).

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

49800000 is an frugal number, since it uses more digits than its factorization.

49800000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123 (or 93 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 49800000 is about 7056.9115057509. The cubic root of 49800000 is about 367.9112892660.

Adding to 49800000 its reverse (894), we get a palindrome (49800894).

The spelling of 49800000 in words is "forty-nine million, eight hundred thousand".