1276387087 has 8 divisors (see below), whose sum is σ = 1318528640. Its totient is φ = 1234306080.

The previous prime is 1276387033. The next prime is 1276387097. The reversal of 1276387087 is 7807836721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1276387087 - 2¹⁵ = 1276354319 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1276387087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1276387027) 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, 29893 + ... + 58705.

It is an arithmetic number, because the mean of its divisors is an integer number (164816080).

Almost surely, 2^1276387087 is an apocalyptic number.

1276387087 is a deficient number, since it is larger than the sum of its proper divisors (42141553).

1276387087 is a wasteful number, since it uses less digits than its factorization.

1276387087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30273.

The product of its (nonzero) digits is 790272, while the sum is 49.

The square root of 1276387087 is about 35726.5599659413. The cubic root of 1276387087 is about 1084.7445262016.

The spelling of 1276387087 in words is "one billion, two hundred seventy-six million, three hundred eighty-seven thousand, eighty-seven".