1264880 has 40 divisors (see below), whose sum is σ = 2989392. Its totient is φ = 497664.

The previous prime is 1264877. The next prime is 1264883. The reversal of 1264880 is 884621.

It is an interprime number because it is at equal distance from previous prime (1264877) and next prime (1264883).

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1264883) 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, 7679 + ... + 7841.

2^1264880 is an apocalyptic number.

1264880 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 1264880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1494696).

1264880 is an abundant number, since it is smaller than the sum of its proper divisors (1724512).

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

1264880 is a wasteful number, since it uses less digits than its factorization.

1264880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273 (or 267 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 1264880 is about 1124.6688401481. The cubic root of 1264880 is about 108.1474893913.

The spelling of 1264880 in words is "one million, two hundred sixty-four thousand, eight hundred eighty".