47143830 has 16 divisors (see below), whose sum is σ = 113145264. Its totient is φ = 12571680.

The previous prime is 47143829. The next prime is 47143847. The reversal of 47143830 is 3834174.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 1571461 = 47143830 / (4 + 7 + 1 + 4 + 3 + 8 + 3 + 0).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 785701 + ... + 785760.

It is an arithmetic number, because the mean of its divisors is an integer number (7071579).

Almost surely, 2^47143830 is an apocalyptic number.

47143830 is an abundant number, since it is smaller than the sum of its proper divisors (66001434).

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

47143830 is a wasteful number, since it uses less digits than its factorization.

47143830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1571471.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 47143830 is about 6866.1364682039. The cubic root of 47143830 is about 361.2503589912.

The spelling of 47143830 in words is "forty-seven million, one hundred forty-three thousand, eight hundred thirty".