1040388 has 24 divisors (see below), whose sum is σ = 2446080. Its totient is φ = 344160.

The previous prime is 1040387. The next prime is 1040407. The reversal of 1040388 is 8830401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1040381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1933 + ... + 2411.

It is an arithmetic number, because the mean of its divisors is an integer number (101920).

2^1040388 is an apocalyptic number.

It is an amenable number.

1040388 is an abundant number, since it is smaller than the sum of its proper divisors (1405692).

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

1040388 is a wasteful number, since it uses less digits than its factorization.

1040388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667 (or 665 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 1040388 is about 1019.9941176301. The cubic root of 1040388 is about 101.3285383619.

Adding to 1040388 its reverse (8830401), we get a palindrome (9870789).

The spelling of 1040388 in words is "one million, forty thousand, three hundred eighty-eight".