1115638 has 16 divisors (see below), whose sum is σ = 1774080. Its totient is φ = 525096.

The previous prime is 1115633. The next prime is 1115641. The reversal of 1115638 is 8365111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115633) 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, 3481 + ... + 3787.

It is an arithmetic number, because the mean of its divisors is an integer number (110880).

2^1115638 is an apocalyptic number.

1115638 is a deficient number, since it is larger than the sum of its proper divisors (658442).

1115638 is a wasteful number, since it uses less digits than its factorization.

1115638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411.

The product of its digits is 720, while the sum is 25.

The square root of 1115638 is about 1056.2376626498. The cubic root of 1115638 is about 103.7148872324.

The spelling of 1115638 in words is "one million, one hundred fifteen thousand, six hundred thirty-eight".