47730645 has 48 divisors (see below), whose sum is σ = 89698752. Its totient is φ = 23385600.

The previous prime is 47730643. The next prime is 47730659. The reversal of 47730645 is 54603774.

47730645 is a `hidden beast` number, since 4 + 7 + 7 + 3 + 0 + 645 = 666.

It is not a de Polignac number, because 47730645 - 2¹ = 47730643 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47730643) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 32170 + ... + 33620.

It is an arithmetic number, because the mean of its divisors is an integer number (1868724).

Almost surely, 2^47730645 is an apocalyptic number.

47730645 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

47730645 is a deficient number, since it is larger than the sum of its proper divisors (41968107).

47730645 is a wasteful number, since it uses less digits than its factorization.

47730645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1522 (or 1519 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 36.

The square root of 47730645 is about 6908.7368599477. The cubic root of 47730645 is about 362.7430506365.

The spelling of 47730645 in words is "forty-seven million, seven hundred thirty thousand, six hundred forty-five".