1388532 has 24 divisors (see below), whose sum is σ = 3259872. Its totient is φ = 460000.

The previous prime is 1388483. The next prime is 1388587. The reversal of 1388532 is 2358831.

It is a happy number.

It is a super-2 number, since 2×1388532² = 3856042230048, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1388532.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2782 + ... + 3242.

It is an arithmetic number, because the mean of its divisors is an integer number (135828).

2^1388532 is an apocalyptic number.

1388532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1388532 is an abundant number, since it is smaller than the sum of its proper divisors (1871340).

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

1388532 is a wasteful number, since it uses less digits than its factorization.

1388532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719 (or 717 counting only the distinct ones).

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

The square root of 1388532 is about 1178.3598771173. The cubic root of 1388532 is about 111.5626010011.

Subtracting 1388532 from its reverse (2358831), we obtain a cube (970299 = 99³).

The spelling of 1388532 in words is "one million, three hundred eighty-eight thousand, five hundred thirty-two".