1260606240 has 144 divisors (see below), whose sum is σ = 4461283008. Its totient is φ = 336151296.

The previous prime is 1260606233. The next prime is 1260606293. The reversal of 1260606240 is 426060621.

It is a happy number.

1260606240 is a `hidden beast` number, since 12 + 6 + 0 + 606 + 2 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

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 23 ways as a sum of consecutive naturals, for example, 22669 + ... + 55091.

It is an arithmetic number, because the mean of its divisors is an integer number (30981132).

Almost surely, 2^1260606240 is an apocalyptic number.

1260606240 is a gapful number since it is divisible by the number (10) 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 1260606240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2230641504).

1260606240 is an abundant number, since it is smaller than the sum of its proper divisors (3200676768).

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

1260606240 is an equidigital number, since it uses as much as digits as its factorization.

1260606240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32453 (or 32433 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 1260606240 is about 35505.0171102620. The cubic root of 1260606240 is about 1080.2554951084.

Adding to 1260606240 its reverse (426060621), we get a palindrome (1686666861).

The spelling of 1260606240 in words is "one billion, two hundred sixty million, six hundred six thousand, two hundred forty".