1398156 has 48 divisors (see below), whose sum is σ = 3472896. Its totient is φ = 437184.

The previous prime is 1398151. The next prime is 1398161. The reversal of 1398156 is 6518931.

It is an interprime number because it is at equal distance from previous prime (1398151) and next prime (1398161).

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (1398151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20835 + ... + 20901.

It is an arithmetic number, because the mean of its divisors is an integer number (72352).

2^1398156 is an apocalyptic number.

It is an amenable number.

1398156 is an abundant number, since it is smaller than the sum of its proper divisors (2074740).

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

1398156 is a wasteful number, since it uses less digits than its factorization.

1398156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158 (or 156 counting only the distinct ones).

The product of its digits is 6480, while the sum is 33.

The square root of 1398156 is about 1182.4364676379. The cubic root of 1398156 is about 111.8197568565.

The spelling of 1398156 in words is "one million, three hundred ninety-eight thousand, one hundred fifty-six".