1292887396 has 12 divisors (see below), whose sum is σ = 2340572220. Its totient is φ = 624152480.

The previous prime is 1292887391. The next prime is 1292887397. The reversal of 1292887396 is 6937882921.

It can be written as a sum of positive squares in 2 ways, for example, as 231040000 + 1061847396 = 15200^2 + 32586^2 .

It is not an unprimeable number, because it can be changed into a prime (1292887391) 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, 5572675 + ... + 5572906.

It is an arithmetic number, because the mean of its divisors is an integer number (195047685).

Almost surely, 2^1292887396 is an apocalyptic number.

It is an amenable number.

1292887396 is a deficient number, since it is larger than the sum of its proper divisors (1047684824).

1292887396 is a wasteful number, since it uses less digits than its factorization.

1292887396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11145614 (or 11145612 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 55.

The square root of 1292887396 is about 35956.7434009255. The cubic root of 1292887396 is about 1089.3988200720.

The spelling of 1292887396 in words is "one billion, two hundred ninety-two million, eight hundred eighty-seven thousand, three hundred ninety-six".