47312930 has 24 divisors (see below), whose sum is σ = 99068508. Its totient is φ = 16221408.

The previous prime is 47312917. The next prime is 47312963. The reversal of 47312930 is 3921374.

It can be written as a sum of positive squares in 2 ways, for example, as 43388569 + 3924361 = 6587^2 + 1981^2 .

It is a junction number, because it is equal to n+sod(n) for n = 47312893 and 47312902.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 47789 + ... + 48768.

Almost surely, 2^47312930 is an apocalyptic number.

47312930 is an abundant number, since it is smaller than the sum of its proper divisors (51755578).

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

47312930 is a wasteful number, since it uses less digits than its factorization.

47312930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96578 (or 96571 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 47312930 is about 6878.4395032594. The cubic root of 47312930 is about 361.6817660478.

The spelling of 47312930 in words is "forty-seven million, three hundred twelve thousand, nine hundred thirty".