272921840 has 20 divisors (see below), whose sum is σ = 634543464. Its totient is φ = 109168704.

The previous prime is 272921807. The next prime is 272921849. The reversal of 272921840 is 48129272.

272921840 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 272921840.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (272921849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1705682 + ... + 1705841.

Almost surely, 2^272921840 is an apocalyptic number.

272921840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

272921840 is an abundant number, since it is smaller than the sum of its proper divisors (361621624).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

272921840 is a wasteful number, since it uses less digits than its factorization.

272921840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3411536 (or 3411530 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 272921840 is about 16520.3462433449. The cubic root of 272921840 is about 648.6534966092.

The spelling of 272921840 in words is "two hundred seventy-two million, nine hundred twenty-one thousand, eight hundred forty".