47671940 has 24 divisors (see below), whose sum is σ = 103564440. Its totient is φ = 18411008.

The previous prime is 47671937. The next prime is 47671957. The reversal of 47671940 is 4917674.

47671940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 6724 + 47665216 = 82^2 + 6904^2 .

It is a super-2 number, since 2×47671940² = 4545227726727200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 47671894 and 47671903.

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 7 ways as a sum of consecutive naturals, for example, 40517 + ... + 41676.

It is an arithmetic number, because the mean of its divisors is an integer number (4315185).

Almost surely, 2^47671940 is an apocalyptic number.

It is an amenable number.

47671940 is an abundant number, since it is smaller than the sum of its proper divisors (55892500).

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

47671940 is a wasteful number, since it uses less digits than its factorization.

47671940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82231 (or 82229 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 47671940 is about 6904.4869469063. The cubic root of 47671940 is about 362.5942743308.

The spelling of 47671940 in words is "forty-seven million, six hundred seventy-one thousand, nine hundred forty".