272123128 has 8 divisors (see below), whose sum is σ = 510230880. Its totient is φ = 136061560.

The previous prime is 272123101. The next prime is 272123129. The reversal of 272123128 is 821321272.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 272123096 and 272123105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (272123129) 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 as a sum of consecutive naturals, namely, 17007688 + ... + 17007703.

It is an arithmetic number, because the mean of its divisors is an integer number (63778860).

Almost surely, 2^272123128 is an apocalyptic number.

It is an amenable number.

272123128 is a deficient number, since it is larger than the sum of its proper divisors (238107752).

272123128 is a wasteful number, since it uses less digits than its factorization.

272123128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34015397 (or 34015393 counting only the distinct ones).

The product of its digits is 2688, while the sum is 28.

The square root of 272123128 is about 16496.1549459260. The cubic root of 272123128 is about 648.0201119094.

The spelling of 272123128 in words is "two hundred seventy-two million, one hundred twenty-three thousand, one hundred twenty-eight".