1388235 has 16 divisors (see below), whose sum is σ = 2338560. Its totient is φ = 701280.

The previous prime is 1388227. The next prime is 1388243. The reversal of 1388235 is 5328831.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1388227) and next prime (1388243).

It is not a de Polignac number, because 1388235 - 2³ = 1388227 is a prime.

1388235 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2151 + ... + 2720.

It is an arithmetic number, because the mean of its divisors is an integer number (146160).

2^1388235 is an apocalyptic number.

1388235 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1388235 is a deficient number, since it is larger than the sum of its proper divisors (950325).

1388235 is a wasteful number, since it uses less digits than its factorization.

1388235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4898.

The product of its digits is 5760, while the sum is 30.

The square root of 1388235 is about 1178.2338477569. The cubic root of 1388235 is about 111.5546462078.

The spelling of 1388235 in words is "one million, three hundred eighty-eight thousand, two hundred thirty-five".