47531930 has 16 divisors (see below), whose sum is σ = 86641920. Its totient is φ = 18771792.

The previous prime is 47531929. The next prime is 47531933. The reversal of 47531930 is 3913574.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (47531933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29294 + ... + 30873.

It is an arithmetic number, because the mean of its divisors is an integer number (5415120).

Almost surely, 2^47531930 is an apocalyptic number.

47531930 is a deficient number, since it is larger than the sum of its proper divisors (39109990).

47531930 is a wasteful number, since it uses less digits than its factorization.

47531930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60253.

The product of its (nonzero) digits is 11340, while the sum is 32.

The square root of 47531930 is about 6894.3404325577. The cubic root of 47531930 is about 362.2389527626.

The spelling of 47531930 in words is "forty-seven million, five hundred thirty-one thousand, nine hundred thirty".