260267640 has 64 divisors (see below), whose sum is σ = 782762400. Its totient is φ = 69230592.

The previous prime is 260267621. The next prime is 260267659. The reversal of 260267640 is 46762062.

It is an interprime number because it is at equal distance from previous prime (260267621) and next prime (260267659).

It is a congruent number.

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, 49456 + ... + 54464.

Almost surely, 2^260267640 is an apocalyptic number.

260267640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

260267640 is an abundant number, since it is smaller than the sum of its proper divisors (522494760).

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

260267640 is a wasteful number, since it uses less digits than its factorization.

260267640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5456 (or 5452 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 260267640 is about 16132.8125260291. The cubic root of 260267640 is about 638.4693565077.

The spelling of 260267640 in words is "two hundred sixty million, two hundred sixty-seven thousand, six hundred forty".