268820516 has 6 divisors (see below), whose sum is σ = 470435910. Its totient is φ = 134410256.

The previous prime is 268820509. The next prime is 268820521. The reversal of 268820516 is 615028862.

It can be written as a sum of positive squares in only one way, i.e., 163840000 + 104980516 = 12800^2 + 10246^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 268820516.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33602561 + ... + 33602568.

It is an arithmetic number, because the mean of its divisors is an integer number (78405985).

Almost surely, 2^268820516 is an apocalyptic number.

It is an amenable number.

268820516 is a deficient number, since it is larger than the sum of its proper divisors (201615394).

268820516 is a wasteful number, since it uses less digits than its factorization.

268820516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67205133 (or 67205131 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 268820516 is about 16395.7468875315. The cubic root of 268820516 is about 645.3878771896.

The spelling of 268820516 in words is "two hundred sixty-eight million, eight hundred twenty thousand, five hundred sixteen".