272105427 has 32 divisors (see below), whose sum is σ = 402474240. Its totient is φ = 162155520.

The previous prime is 272105423. The next prime is 272105429. The reversal of 272105427 is 724501272.

It is not a de Polignac number, because 272105427 - 2² = 272105423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 272105394 and 272105403.

It is not an unprimeable number, because it can be changed into a prime (272105423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 628203 + ... + 628635.

It is an arithmetic number, because the mean of its divisors is an integer number (12577320).

Almost surely, 2^272105427 is an apocalyptic number.

272105427 is a deficient number, since it is larger than the sum of its proper divisors (130368813).

272105427 is a wasteful number, since it uses less digits than its factorization.

272105427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723.

The product of its (nonzero) digits is 7840, while the sum is 30.

The square root of 272105427 is about 16495.6184182346. The cubic root of 272105427 is about 648.0060608525.

Adding to 272105427 its reverse (724501272), we get a palindrome (996606699).

The spelling of 272105427 in words is "two hundred seventy-two million, one hundred five thousand, four hundred twenty-seven".