1398255 has 24 divisors (see below), whose sum is σ = 2335536. Its totient is φ = 714240.

The previous prime is 1398251. The next prime is 1398259. The reversal of 1398255 is 5528931.

It is an interprime number because it is at equal distance from previous prime (1398251) and next prime (1398259).

It is not a de Polignac number, because 1398255 - 2² = 1398251 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1398251) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14367 + ... + 14463.

It is an arithmetic number, because the mean of its divisors is an integer number (97314).

2^1398255 is an apocalyptic number.

1398255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1398255 is a deficient number, since it is larger than the sum of its proper divisors (937281).

1398255 is an equidigital number, since it uses as much as digits as its factorization.

1398255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167 (or 136 counting only the distinct ones).

The product of its digits is 10800, while the sum is 33.

The square root of 1398255 is about 1182.4783296112. The cubic root of 1398255 is about 111.8223960219.

It can be divided in two parts, 1398 and 255, that added together give a triangular number (1653 = T₅₇).

The spelling of 1398255 in words is "one million, three hundred ninety-eight thousand, two hundred fifty-five".