260407440 has 160 divisors (see below), whose sum is σ = 926131200. Its totient is φ = 67184640.

The previous prime is 260407421. The next prime is 260407487. The reversal of 260407440 is 44704062.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 65016 + ... + 68904.

It is an arithmetic number, because the mean of its divisors is an integer number (5788320).

Almost surely, 2^260407440 is an apocalyptic number.

260407440 is a gapful number since it is divisible by the number (20) 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 260407440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (463065600).

260407440 is an abundant number, since it is smaller than the sum of its proper divisors (665723760).

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

260407440 is a wasteful number, since it uses less digits than its factorization.

260407440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3942 (or 3930 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

The square root of 260407440 is about 16137.1447288546. The cubic root of 260407440 is about 638.5836517251.

The spelling of 260407440 in words is "two hundred sixty million, four hundred seven thousand, four hundred forty".