268992157 has 8 divisors (see below), whose sum is σ = 308133056. Its totient is φ = 230029632.

The previous prime is 268992137. The next prime is 268992169. The reversal of 268992157 is 751299862.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 268992157 - 2⁷ = 268992029 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 268992157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268992137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41343 + ... + 47404.

It is an arithmetic number, because the mean of its divisors is an integer number (38516632).

Almost surely, 2^268992157 is an apocalyptic number.

It is an amenable number.

268992157 is a deficient number, since it is larger than the sum of its proper divisors (39140899).

268992157 is an equidigital number, since it uses as much as digits as its factorization.

268992157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89187.

The product of its digits is 544320, while the sum is 49.

The square root of 268992157 is about 16400.9803670390. The cubic root of 268992157 is about 645.5252072988.

The spelling of 268992157 in words is "two hundred sixty-eight million, nine hundred ninety-two thousand, one hundred fifty-seven".