260071440 has 80 divisors (see below), whose sum is σ = 853659648. Its totient is φ = 65271808.

The previous prime is 260071433. The next prime is 260071451. The reversal of 260071440 is 44170062.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 260071440.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27792 + ... + 35951.

Almost surely, 2^260071440 is an apocalyptic number.

260071440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

260071440 is an abundant number, since it is smaller than the sum of its proper divisors (593588208).

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

260071440 is a wasteful number, since it uses less digits than its factorization.

260071440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63776 (or 63770 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 260071440 is about 16126.7306048064. The cubic root of 260071440 is about 638.3088817259.

The spelling of 260071440 in words is "two hundred sixty million, seventy-one thousand, four hundred forty".