1260552640 has 28 divisors (see below), whose sum is σ = 3001691736. Its totient is φ = 504220928.

The previous prime is 1260552637. The next prime is 1260552649. The reversal of 1260552640 is 462550621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1260552649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1969294 + ... + 1969933.

Almost surely, 2^1260552640 is an apocalyptic number.

1260552640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1260552640 is an abundant number, since it is smaller than the sum of its proper divisors (1741139096).

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

1260552640 is an equidigital number, since it uses as much as digits as its factorization.

1260552640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3939244 (or 3939234 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 1260552640 is about 35504.2622793377. The cubic root of 1260552640 is about 1080.2401843494.

The spelling of 1260552640 in words is "one billion, two hundred sixty million, five hundred fifty-two thousand, six hundred forty".