47521386 has 24 divisors (see below), whose sum is σ = 112323744. Its totient is φ = 14400360.

The previous prime is 47521363. The next prime is 47521387. The reversal of 47521386 is 68312574.

It is a self number, because there is not a number n which added to its sum of digits gives 47521386.

It is not an unprimeable number, because it can be changed into a prime (47521387) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 119806 + ... + 120201.

It is an arithmetic number, because the mean of its divisors is an integer number (4680156).

Almost surely, 2^47521386 is an apocalyptic number.

47521386 is an abundant number, since it is smaller than the sum of its proper divisors (64802358).

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

47521386 is a wasteful number, since it uses less digits than its factorization.

47521386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240026 (or 240023 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 47521386 is about 6893.5757049589. The cubic root of 47521386 is about 362.2121656466.

The spelling of 47521386 in words is "forty-seven million, five hundred twenty-one thousand, three hundred eighty-six".