472556138 has 8 divisors (see below), whose sum is σ = 708948288. Its totient is φ = 236240044.

The previous prime is 472556113. The next prime is 472556143. The reversal of 472556138 is 831655274.

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

It is a super-2 number, since 2×472556138² = 446618607122950088, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 472556095 and 472556104.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 545 + ... + 30747.

It is an arithmetic number, because the mean of its divisors is an integer number (88618536).

Almost surely, 2^472556138 is an apocalyptic number.

472556138 is a deficient number, since it is larger than the sum of its proper divisors (236392150).

472556138 is a wasteful number, since it uses less digits than its factorization.

472556138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38028.

The product of its digits is 201600, while the sum is 41.

The square root of 472556138 is about 21738.3563776105. The cubic root of 472556138 is about 778.9049602184.

The spelling of 472556138 in words is "four hundred seventy-two million, five hundred fifty-six thousand, one hundred thirty-eight".