47213830 has 8 divisors (see below), whose sum is σ = 84984912. Its totient is φ = 18885528.

The previous prime is 47213821. The next prime is 47213833. The reversal of 47213830 is 3831274.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47213833) by changing a digit.

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, 2360682 + ... + 2360701.

It is an arithmetic number, because the mean of its divisors is an integer number (10623114).

Almost surely, 2^47213830 is an apocalyptic number.

47213830 is a deficient number, since it is larger than the sum of its proper divisors (37771082).

47213830 is a wasteful number, since it uses less digits than its factorization.

47213830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4721390.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 47213830 is about 6871.2320583721. The cubic root of 47213830 is about 361.4290675635.

The spelling of 47213830 in words is "forty-seven million, two hundred thirteen thousand, eight hundred thirty".