1258398 has 12 divisors (see below), whose sum is σ = 2726568. Its totient is φ = 419460.

The previous prime is 1258373. The next prime is 1258403. The reversal of 1258398 is 8938521.

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34938 + ... + 34973.

It is an arithmetic number, because the mean of its divisors is an integer number (227214).

2^1258398 is an apocalyptic number.

1258398 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1258398 is an abundant number, since it is smaller than the sum of its proper divisors (1468170).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1258398 is a wasteful number, since it uses less digits than its factorization.

1258398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69919 (or 69916 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 1258398 is about 1121.7834015531. The cubic root of 1258398 is about 107.9624354955.

The spelling of 1258398 in words is "one million, two hundred fifty-eight thousand, three hundred ninety-eight".