47721204 has 48 divisors (see below), whose sum is σ = 124703040. Its totient is φ = 15780960.

The previous prime is 47721199. The next prime is 47721241. The reversal of 47721204 is 40212774.

It is a happy number.

47721204 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×47721204² = 4554626622419232, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12462 + ... + 15834.

It is an arithmetic number, because the mean of its divisors is an integer number (2597980).

Almost surely, 2^47721204 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 47721204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62351520).

47721204 is an abundant number, since it is smaller than the sum of its proper divisors (76981836).

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

47721204 is a wasteful number, since it uses less digits than its factorization.

47721204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3517 (or 3509 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 27.

The square root of 47721204 is about 6908.0535608810. The cubic root of 47721204 is about 362.7191325089.

Adding to 47721204 its reverse (40212774), we get a palindrome (87933978).

The spelling of 47721204 in words is "forty-seven million, seven hundred twenty-one thousand, two hundred four".