1281598 has 8 divisors (see below), whose sum is σ = 1955160. Its totient is φ = 629880.

The previous prime is 1281587. The next prime is 1281649. The reversal of 1281598 is 8951821.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5313 + ... + 5548.

It is an arithmetic number, because the mean of its divisors is an integer number (244395).

2^1281598 is an apocalyptic number.

1281598 is a deficient number, since it is larger than the sum of its proper divisors (673562).

1281598 is a wasteful number, since it uses less digits than its factorization.

1281598 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10922.

The product of its digits is 5760, while the sum is 34.

The square root of 1281598 is about 1132.0768525149. The cubic root of 1281598 is about 108.6218696170.

The spelling of 1281598 in words is "one million, two hundred eighty-one thousand, five hundred ninety-eight".