272638507 has 8 divisors (see below), whose sum is σ = 274798656. Its totient is φ = 270484032.

The previous prime is 272638489. The next prime is 272638517. The reversal of 272638507 is 705836272.

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-272638507 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 272638507.

It is not an unprimeable number, because it can be changed into a prime (272638517) 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, 171438 + ... + 173020.

It is an arithmetic number, because the mean of its divisors is an integer number (34349832).

Almost surely, 2^272638507 is an apocalyptic number.

272638507 is a deficient number, since it is larger than the sum of its proper divisors (2160149).

272638507 is a wasteful number, since it uses less digits than its factorization.

272638507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2837.

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 272638507 is about 16511.7687423244. The cubic root of 272638507 is about 648.4289529859.

The spelling of 272638507 in words is "two hundred seventy-two million, six hundred thirty-eight thousand, five hundred seven".