272118861 has 48 divisors (see below), whose sum is σ = 474739200. Its totient is φ = 146893824.

The previous prime is 272118859. The next prime is 272118863. The reversal of 272118861 is 168811272.

It is an interprime number because it is at equal distance from previous prime (272118859) and next prime (272118863).

It is not a de Polignac number, because 272118861 - 2¹ = 272118859 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (272118863) 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 47 ways as a sum of consecutive naturals, for example, 84285 + ... + 87453.

It is an arithmetic number, because the mean of its divisors is an integer number (9890400).

Almost surely, 2^272118861 is an apocalyptic number.

272118861 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

272118861 is a deficient number, since it is larger than the sum of its proper divisors (202620339).

272118861 is a wasteful number, since it uses less digits than its factorization.

272118861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3258 (or 3255 counting only the distinct ones).

The product of its digits is 10752, while the sum is 36.

The square root of 272118861 is about 16496.0256122498. The cubic root of 272118861 is about 648.0167248198.

The spelling of 272118861 in words is "two hundred seventy-two million, one hundred eighteen thousand, eight hundred sixty-one".