47897540 has 24 divisors (see below), whose sum is σ = 101266200. Its totient is φ = 19029248.

The previous prime is 47897539. The next prime is 47897561. The reversal of 47897540 is 4579874.

It can be written as a sum of positive squares in 4 ways, for example, as 232324 + 47665216 = 482^2 + 6904^2 .

It is a junction number, because it is equal to n+sod(n) for n = 47897491 and 47897500.

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, 5057 + ... + 11016.

It is an arithmetic number, because the mean of its divisors is an integer number (4219425).

Almost surely, 2^47897540 is an apocalyptic number.

It is an amenable number.

47897540 is an abundant number, since it is smaller than the sum of its proper divisors (53368660).

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

47897540 is a wasteful number, since it uses less digits than its factorization.

47897540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16231 (or 16229 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 44.

The square root of 47897540 is about 6920.8048664877. The cubic root of 47897540 is about 363.1653480011.

The spelling of 47897540 in words is "forty-seven million, eight hundred ninety-seven thousand, five hundred forty".