1294265280 has 224 divisors, whose sum is σ = 5123566080. Its totient is φ = 268922880.

The previous prime is 1294265261. The next prime is 1294265293. The reversal of 1294265280 is 825624921.

It is a tau number, because it is divible by the number of its divisors (224).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65166 + ... + 82674.

Almost surely, 2^1294265280 is an apocalyptic number.

1294265280 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 1294265280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2561783040).

1294265280 is an abundant number, since it is smaller than the sum of its proper divisors (3829300800).

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

1294265280 is a wasteful number, since it uses less digits than its factorization.

1294265280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17547 (or 17537 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 1294265280 is about 35975.8985989231. The cubic root of 1294265280 is about 1089.7856885842.

The spelling of 1294265280 in words is "one billion, two hundred ninety-four million, two hundred sixty-five thousand, two hundred eighty".