268566542 has 16 divisors (see below), whose sum is σ = 405736992. Its totient is φ = 133324800.

The previous prime is 268566509. The next prime is 268566559. The reversal of 268566542 is 245665862.

It is a junction number, because it is equal to n+sod(n) for n = 268566493 and 268566502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205463 + ... + 206765.

It is an arithmetic number, because the mean of its divisors is an integer number (25358562).

Almost surely, 2^268566542 is an apocalyptic number.

268566542 is a deficient number, since it is larger than the sum of its proper divisors (137170450).

268566542 is a wasteful number, since it uses less digits than its factorization.

268566542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1963.

The product of its digits is 691200, while the sum is 44.

The square root of 268566542 is about 16387.9999389797. Note that the first 4 decimals coincide. The cubic root of 268566542 is about 645.1845650937.

The spelling of 268566542 in words is "two hundred sixty-eight million, five hundred sixty-six thousand, five hundred forty-two".