268128738 has 16 divisors (see below), whose sum is σ = 595841760. Its totient is φ = 89376228.

The previous prime is 268128713. The next prime is 268128739. The reversal of 268128738 is 837821862.

It is a junction number, because it is equal to n+sod(n) for n = 268128693 and 268128702.

It is not an unprimeable number, because it can be changed into a prime (268128739) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2482620 + ... + 2482727.

It is an arithmetic number, because the mean of its divisors is an integer number (37240110).

Almost surely, 2^268128738 is an apocalyptic number.

268128738 is an abundant number, since it is smaller than the sum of its proper divisors (327713022).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

268128738 is a wasteful number, since it uses less digits than its factorization.

268128738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4965358 (or 4965352 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The square root of 268128738 is about 16374.6370341452. The cubic root of 268128738 is about 644.8337916790.

The spelling of 268128738 in words is "two hundred sixty-eight million, one hundred twenty-eight thousand, seven hundred thirty-eight".