47331890 has 8 divisors (see below), whose sum is σ = 85197420. Its totient is φ = 18932752.

The previous prime is 47331883. The next prime is 47331923. The reversal of 47331890 is 9813374.

It can be written as a sum of positive squares in 2 ways, for example, as 43335889 + 3996001 = 6583^2 + 1999^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 47331890.

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, 2366585 + ... + 2366604.

Almost surely, 2^47331890 is an apocalyptic number.

47331890 is a deficient number, since it is larger than the sum of its proper divisors (37865530).

47331890 is a wasteful number, since it uses less digits than its factorization.

47331890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4733196.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 47331890 is about 6879.8175847910. The cubic root of 47331890 is about 361.7300725782.

The spelling of 47331890 in words is "forty-seven million, three hundred thirty-one thousand, eight hundred ninety".