260406240 has 96 divisors (see below), whose sum is σ = 827711136. Its totient is φ = 68812800.

The previous prime is 260406239. The next prime is 260406241. The reversal of 260406240 is 42604062.

It is an interprime number because it is at equal distance from previous prime (260406239) and next prime (260406241).

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×260406240² = 135622819661875200, which contains 22 as substring.

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 260406240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260406241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51840 + ... + 56640.

It is an arithmetic number, because the mean of its divisors is an integer number (8621991).

Almost surely, 2^260406240 is an apocalyptic number.

260406240 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 260406240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (413855568).

260406240 is an abundant number, since it is smaller than the sum of its proper divisors (567304896).

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

260406240 is a wasteful number, since it uses less digits than its factorization.

260406240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4932 (or 4924 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 260406240 is about 16137.1075475130. The cubic root of 260406240 is about 638.5826708243.

The spelling of 260406240 in words is "two hundred sixty million, four hundred six thousand, two hundred forty".