1290878 has 8 divisors (see below), whose sum is σ = 2050272. Its totient is φ = 607456.

The previous prime is 1290869. The next prime is 1290901. The reversal of 1290878 is 8780921.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18950 + ... + 19017.

It is an arithmetic number, because the mean of its divisors is an integer number (256284).

2^1290878 is an apocalyptic number.

1290878 is a deficient number, since it is larger than the sum of its proper divisors (759394).

1290878 is a wasteful number, since it uses less digits than its factorization.

1290878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37986.

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 1290878 is about 1136.1681213623. The cubic root of 1290878 is about 108.8834148913.

The spelling of 1290878 in words is "one million, two hundred ninety thousand, eight hundred seventy-eight".