1298878 has 24 divisors (see below), whose sum is σ = 2359152. Its totient is φ = 525312.

The previous prime is 1298863. The next prime is 1298887. The reversal of 1298878 is 8788921.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

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 11 ways as a sum of consecutive naturals, for example, 4926 + ... + 5182.

It is an arithmetic number, because the mean of its divisors is an integer number (98298).

2^1298878 is an apocalyptic number.

1298878 is a deficient number, since it is larger than the sum of its proper divisors (1060274).

1298878 is a wasteful number, since it uses less digits than its factorization.

1298878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304 (or 285 counting only the distinct ones).

The product of its digits is 64512, while the sum is 43.

The square root of 1298878 is about 1139.6832893396. The cubic root of 1298878 is about 109.1078807349.

Adding to 1298878 its sum of digits (43), we get a palindrome (1298921).

The spelling of 1298878 in words is "one million, two hundred ninety-eight thousand, eight hundred seventy-eight".