1253898 has 12 divisors (see below), whose sum is σ = 2716818. Its totient is φ = 417960.

The previous prime is 1253897. The next prime is 1253909. The reversal of 1253898 is 8983521.

It can be written as a sum of positive squares in only one way, i.e., 1238769 + 15129 = 1113^2 + 123^2 .

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1253897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34813 + ... + 34848.

2^1253898 is an apocalyptic number.

1253898 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1253898 is an abundant number, since it is smaller than the sum of its proper divisors (1462920).

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

1253898 is a wasteful number, since it uses less digits than its factorization.

1253898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69669 (or 69666 counting only the distinct ones).

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

The square root of 1253898 is about 1119.7758704312. The cubic root of 1253898 is about 107.8335914627.

The spelling of 1253898 in words is "one million, two hundred fifty-three thousand, eight hundred ninety-eight".