260628880 has 20 divisors (see below), whose sum is σ = 605962332. Its totient is φ = 104251520.

The previous prime is 260628877. The next prime is 260628883. The reversal of 260628880 is 88826062.

It is an interprime number because it is at equal distance from previous prime (260628877) and next prime (260628883).

It can be written as a sum of positive squares in 2 ways, for example, as 94012416 + 166616464 = 9696^2 + 12908^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (260628883) 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, 1628851 + ... + 1629010.

Almost surely, 2^260628880 is an apocalyptic number.

260628880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

260628880 is an abundant number, since it is smaller than the sum of its proper divisors (345333452).

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

260628880 is a wasteful number, since it uses less digits than its factorization.

260628880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3257874 (or 3257868 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 40.

The square root of 260628880 is about 16144.0044598606. The cubic root of 260628880 is about 638.7646090487.

The spelling of 260628880 in words is "two hundred sixty million, six hundred twenty-eight thousand, eight hundred eighty".