1275716540 has 24 divisors (see below), whose sum is σ = 3061720032. Its totient is φ = 437388480.

The previous prime is 1275716539. The next prime is 1275716543. The reversal of 1275716540 is 456175721.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1275716494 and 1275716503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1275716543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4555991 + ... + 4556270.

It is an arithmetic number, because the mean of its divisors is an integer number (127571668).

Almost surely, 2^1275716540 is an apocalyptic number.

1275716540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1275716540 is an abundant number, since it is smaller than the sum of its proper divisors (1786003492).

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

1275716540 is a wasteful number, since it uses less digits than its factorization.

1275716540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9112277 (or 9112275 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 38.

The square root of 1275716540 is about 35717.1743003278. The cubic root of 1275716540 is about 1084.5545369194.

The spelling of 1275716540 in words is "one billion, two hundred seventy-five million, seven hundred sixteen thousand, five hundred forty".