47808340 has 12 divisors (see below), whose sum is σ = 100397556. Its totient is φ = 19123328.

The previous prime is 47808331. The next prime is 47808359. The reversal of 47808340 is 4380874.

It can be written as a sum of positive squares in 2 ways, for example, as 24324624 + 23483716 = 4932^2 + 4846^2 .

It is a junction number, because it is equal to n+sod(n) for n = 47808296 and 47808305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1195189 + ... + 1195228.

It is an arithmetic number, because the mean of its divisors is an integer number (8366463).

Almost surely, 2^47808340 is an apocalyptic number.

It is an amenable number.

47808340 is an abundant number, since it is smaller than the sum of its proper divisors (52589216).

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

47808340 is a wasteful number, since it uses less digits than its factorization.

47808340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2390426 (or 2390424 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 47808340 is about 6914.3575261914. The cubic root of 47808340 is about 362.9397659267.

The spelling of 47808340 in words is "forty-seven million, eight hundred eight thousand, three hundred forty".