1268780 has 12 divisors (see below), whose sum is σ = 2664480. Its totient is φ = 507504.

The previous prime is 1268777. The next prime is 1268783. The reversal of 1268780 is 878621.

It is an interprime number because it is at equal distance from previous prime (1268777) and next prime (1268783).

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1268783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31700 + ... + 31739.

It is an arithmetic number, because the mean of its divisors is an integer number (222040).

2^1268780 is an apocalyptic number.

1268780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1268780 is an abundant number, since it is smaller than the sum of its proper divisors (1395700).

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

1268780 is a wasteful number, since it uses less digits than its factorization.

1268780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63448 (or 63446 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 1268780 is about 1126.4013494310. The cubic root of 1268780 is about 108.2585256065.

It can be divided in two parts, 1268 and 780, that added together give a 11-th power (2048 = 2¹¹).

The spelling of 1268780 in words is "one million, two hundred sixty-eight thousand, seven hundred eighty".