47647780 has 12 divisors (see below), whose sum is σ = 100060380. Its totient is φ = 19059104.

The previous prime is 47647777. The next prime is 47647807. The reversal of 47647780 is 8774674.

It can be written as a sum of positive squares in 2 ways, for example, as 7806436 + 39841344 = 2794^2 + 6312^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1191175 + ... + 1191214.

It is an arithmetic number, because the mean of its divisors is an integer number (8338365).

Almost surely, 2^47647780 is an apocalyptic number.

It is an amenable number.

47647780 is an abundant number, since it is smaller than the sum of its proper divisors (52412600).

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

47647780 is a wasteful number, since it uses less digits than its factorization.

47647780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2382398 (or 2382396 counting only the distinct ones).

The product of its (nonzero) digits is 263424, while the sum is 43.

The square root of 47647780 is about 6902.7371382662. The cubic root of 47647780 is about 362.5330100736.

It can be divided in two parts, 4764 and 7780, that added together give a square (12544 = 112²).

The spelling of 47647780 in words is "forty-seven million, six hundred forty-seven thousand, seven hundred eighty".