1268280 has 96 divisors (see below), whose sum is σ = 4455360. Its totient is φ = 311040.

The previous prime is 1268279. The next prime is 1268287. The reversal of 1268280 is 828621.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1268287) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4545 + ... + 4815.

It is an arithmetic number, because the mean of its divisors is an integer number (46410).

2^1268280 is an apocalyptic number.

1268280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1268280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2227680).

1268280 is an abundant number, since it is smaller than the sum of its proper divisors (3187080).

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

1268280 is a wasteful number, since it uses less digits than its factorization.

1268280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301 (or 294 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 1268280 is about 1126.1793818038. The cubic root of 1268280 is about 108.2443029215.

The spelling of 1268280 in words is "one million, two hundred sixty-eight thousand, two hundred eighty".