472128187 has 8 divisors (see below), whose sum is σ = 482693904. Its totient is φ = 461623968.

The previous prime is 472128121. The next prime is 472128211. The reversal of 472128187 is 781821274.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-472128187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (472128287) 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, 328 + ... + 30730.

It is an arithmetic number, because the mean of its divisors is an integer number (60336738).

Almost surely, 2^472128187 is an apocalyptic number.

472128187 is a deficient number, since it is larger than the sum of its proper divisors (10565717).

472128187 is a wasteful number, since it uses less digits than its factorization.

472128187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30749.

The product of its digits is 50176, while the sum is 40.

The square root of 472128187 is about 21728.5109245894. The cubic root of 472128187 is about 778.6697614744.

The spelling of 472128187 in words is "four hundred seventy-two million, one hundred twenty-eight thousand, one hundred eighty-seven".