47830640 has 160 divisors (see below), whose sum is σ = 135366336. Its totient is φ = 15482880.

The previous prime is 47830633. The next prime is 47830661. The reversal of 47830640 is 4603874.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 47830597 and 47830606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 423224 + ... + 423336.

Almost surely, 2^47830640 is an apocalyptic number.

47830640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47830640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67683168).

47830640 is an abundant number, since it is smaller than the sum of its proper divisors (87535696).

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

47830640 is a wasteful number, since it uses less digits than its factorization.

47830640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187 (or 181 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 47830640 is about 6915.9699247466. The cubic root of 47830640 is about 362.9961877330.

The spelling of 47830640 in words is "forty-seven million, eight hundred thirty thousand, six hundred forty".