47919780 has 36 divisors (see below), whose sum is σ = 145357212. Its totient is φ = 12778560.

The previous prime is 47919763. The next prime is 47919793. The reversal of 47919780 is 8791974.

47919780 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 2 ways, for example, as 34786404 + 13133376 = 5898^2 + 3624^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (45).

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 11 ways as a sum of consecutive naturals, for example, 132931 + ... + 133290.

Almost surely, 2^47919780 is an apocalyptic number.

It is an amenable number.

47919780 is an abundant number, since it is smaller than the sum of its proper divisors (97437432).

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

47919780 is a wasteful number, since it uses less digits than its factorization.

47919780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266236 (or 266231 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The square root of 47919780 is about 6922.4114295526. The cubic root of 47919780 is about 363.2215481565.

The spelling of 47919780 in words is "forty-seven million, nine hundred nineteen thousand, seven hundred eighty".