47471720 has 32 divisors (see below), whose sum is σ = 107026920. Its totient is φ = 18950400.

The previous prime is 47471707. The next prime is 47471731. The reversal of 47471720 is 2717474.

It can be written as a sum of positive squares in 4 ways, for example, as 42745444 + 4726276 = 6538^2 + 2174^2 .

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, 27194 + ... + 28886.

Almost surely, 2^47471720 is an apocalyptic number.

47471720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47471720 is an abundant number, since it is smaller than the sum of its proper divisors (59555200).

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

47471720 is a wasteful number, since it uses less digits than its factorization.

47471720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2405 (or 2401 counting only the distinct ones).

The product of its (nonzero) digits is 10976, while the sum is 32.

The square root of 47471720 is about 6889.9724237474. The cubic root of 47471720 is about 362.0859354603.

The spelling of 47471720 in words is "forty-seven million, four hundred seventy-one thousand, seven hundred twenty".