272491886 has 4 divisors (see below), whose sum is σ = 408737832. Its totient is φ = 136245942.

The previous prime is 272491883. The next prime is 272491969. The reversal of 272491886 is 688194272.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 272491886.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (272491883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68122970 + ... + 68122973.

It is an arithmetic number, because the mean of its divisors is an integer number (102184458).

Almost surely, 2^272491886 is an apocalyptic number.

272491886 is a deficient number, since it is larger than the sum of its proper divisors (136245946).

272491886 is a wasteful number, since it uses less digits than its factorization.

272491886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136245945.

The product of its digits is 387072, while the sum is 47.

The square root of 272491886 is about 16507.3282514161. The cubic root of 272491886 is about 648.3126936080.

The spelling of 272491886 in words is "two hundred seventy-two million, four hundred ninety-one thousand, eight hundred eighty-six".