47447780 has 48 divisors (see below), whose sum is σ = 102199104. Its totient is φ = 18499200.

The previous prime is 47447779. The next prime is 47447819. The reversal of 47447780 is 8774474.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 167519 + ... + 167801.

It is an arithmetic number, because the mean of its divisors is an integer number (2129148).

Almost surely, 2^47447780 is an apocalyptic number.

It is an amenable number.

47447780 is an abundant number, since it is smaller than the sum of its proper divisors (54751324).

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

47447780 is a wasteful number, since it uses less digits than its factorization.

47447780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476 (or 474 counting only the distinct ones).

The product of its (nonzero) digits is 175616, while the sum is 41.

The square root of 47447780 is about 6888.2348972723. The cubic root of 47447780 is about 362.0250585504.

The spelling of 47447780 in words is "forty-seven million, four hundred forty-seven thousand, seven hundred eighty".