1002880260 has 144 divisors (see below), whose sum is σ = 3117769200. Its totient is φ = 260858880.

The previous prime is 1002880259. The next prime is 1002880261. The reversal of 1002880260 is 620882001.

It is an interprime number because it is at equal distance from previous prime (1002880259) and next prime (1002880261).

It can be written as a sum of positive squares in 8 ways, for example, as 668429316 + 334450944 = 25854^2 + 18288^2 .

It is not an unprimeable number, because it can be changed into a prime (1002880261) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1635714 + ... + 1636326.

It is an arithmetic number, because the mean of its divisors is an integer number (21651175).

Almost surely, 2^1002880260 is an apocalyptic number.

1002880260 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 1002880260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1558884600).

1002880260 is an abundant number, since it is smaller than the sum of its proper divisors (2114888940).

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

1002880260 is a wasteful number, since it uses less digits than its factorization.

1002880260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 838 (or 833 counting only the distinct ones).

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

The square root of 1002880260 is about 31668.2847656768. The cubic root of 1002880260 is about 1000.9591663724.

The spelling of 1002880260 in words is "one billion, two million, eight hundred eighty thousand, two hundred sixty".