1295297280 has 216 divisors, whose sum is σ = 4510331280. Its totient is φ = 343203840.

The previous prime is 1295297231. The next prime is 1295297281. The reversal of 1295297280 is 827925921.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (1295297281) 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, 2637835 + ... + 2638325.

Almost surely, 2^1295297280 is an apocalyptic number.

1295297280 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 1295297280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2255165640).

1295297280 is an abundant number, since it is smaller than the sum of its proper divisors (3215034000).

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

1295297280 is a wasteful number, since it uses less digits than its factorization.

1295297280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 747 (or 730 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The square root of 1295297280 is about 35990.2386766190. The cubic root of 1295297280 is about 1090.0752634392.

The spelling of 1295297280 in words is "one billion, two hundred ninety-five million, two hundred ninety-seven thousand, two hundred eighty".