47800900 has 72 divisors (see below), whose sum is σ = 123742080. Its totient is φ = 15671040.

The previous prime is 47800897. The next prime is 47800901. The reversal of 47800900 is 900874.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (47800901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14616 + ... + 17584.

It is an arithmetic number, because the mean of its divisors is an integer number (1718640).

Almost surely, 2^47800900 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 47800900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61871040).

47800900 is an abundant number, since it is smaller than the sum of its proper divisors (75941180).

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

47800900 is a wasteful number, since it uses less digits than its factorization.

47800900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3013 (or 3006 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 47800900 is about 6913.8194943172. The cubic root of 47800900 is about 362.9209378871.

The spelling of 47800900 in words is "forty-seven million, eight hundred thousand, nine hundred".