1388156 has 24 divisors (see below), whose sum is σ = 3029376. Its totient is φ = 540720.

The previous prime is 1388141. The next prime is 1388161. The reversal of 1388156 is 6518831.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1946 + ... + 2561.

It is an arithmetic number, because the mean of its divisors is an integer number (126224).

2^1388156 is an apocalyptic number.

It is an amenable number.

1388156 is an abundant number, since it is smaller than the sum of its proper divisors (1641220).

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

1388156 is a wasteful number, since it uses less digits than its factorization.

1388156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4529 (or 4527 counting only the distinct ones).

The product of its digits is 5760, while the sum is 32.

The square root of 1388156 is about 1178.2003225258. The cubic root of 1388156 is about 111.5525300953.

The spelling of 1388156 in words is "one million, three hundred eighty-eight thousand, one hundred fifty-six".