47921330 has 8 divisors (see below), whose sum is σ = 86258412. Its totient is φ = 19168528.

The previous prime is 47921323. The next prime is 47921339. The reversal of 47921330 is 3312974.

It can be written as a sum of positive squares in 2 ways, for example, as 46117681 + 1803649 = 6791^2 + 1343^2 .

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 47921293 and 47921302.

It is not an unprimeable number, because it can be changed into a prime (47921339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2396057 + ... + 2396076.

Almost surely, 2^47921330 is an apocalyptic number.

47921330 is a deficient number, since it is larger than the sum of its proper divisors (38337082).

47921330 is a wasteful number, since it uses less digits than its factorization.

47921330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4792140.

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

The square root of 47921330 is about 6922.5233838536. The cubic root of 47921330 is about 363.2254643356.

The spelling of 47921330 in words is "forty-seven million, nine hundred twenty-one thousand, three hundred thirty".