47521630 has 32 divisors (see below), whose sum is σ = 97542144. Its totient is φ = 16513536.

The previous prime is 47521619. The next prime is 47521637. The reversal of 47521630 is 3612574.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47521637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8542 + ... + 12961.

It is an arithmetic number, because the mean of its divisors is an integer number (3048192).

Almost surely, 2^47521630 is an apocalyptic number.

47521630 is an abundant number, since it is smaller than the sum of its proper divisors (50020514).

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

47521630 is a wasteful number, since it uses less digits than its factorization.

47521630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21540.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 47521630 is about 6893.5934025731. The cubic root of 47521630 is about 362.2127855753.

The spelling of 47521630 in words is "forty-seven million, five hundred twenty-one thousand, six hundred thirty".