47447272 has 32 divisors (see below), whose sum is σ = 94537800. Its totient is φ = 22247424.

The previous prime is 47447263. The next prime is 47447293. The reversal of 47447272 is 27274474.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 44009956 + 3437316 = 6634^2 + 1854^2 .

47447272 is a modest number, since divided by 7272 gives 4744 as remainder.

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, 55198 + ... + 56050.

Almost surely, 2^47447272 is an apocalyptic number.

It is an amenable number.

47447272 is a deficient number, since it is larger than the sum of its proper divisors (47090528).

47447272 is a wasteful number, since it uses less digits than its factorization.

47447272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285 (or 1281 counting only the distinct ones).

The product of its digits is 87808, while the sum is 37.

The square root of 47447272 is about 6888.1980227052. The cubic root of 47447272 is about 362.0237665379.

The spelling of 47447272 in words is "forty-seven million, four hundred forty-seven thousand, two hundred seventy-two".