47121804 has 24 divisors (see below), whose sum is σ = 122167920. Its totient is φ = 15707232.

The previous prime is 47121799. The next prime is 47121827. The reversal of 47121804 is 40812174.

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218049 + ... + 218264.

It is an arithmetic number, because the mean of its divisors is an integer number (5090330).

Almost surely, 2^47121804 is an apocalyptic number.

It is an amenable number.

47121804 is an abundant number, since it is smaller than the sum of its proper divisors (75046116).

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

47121804 is a wasteful number, since it uses less digits than its factorization.

47121804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436326 (or 436318 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 47121804 is about 6864.5323220158. The cubic root of 47121804 is about 361.1940904763.

Adding to 47121804 its reverse (40812174), we get a palindrome (87933978).

The spelling of 47121804 in words is "forty-seven million, one hundred twenty-one thousand, eight hundred four".