11573638 has 8 divisors (see below), whose sum is σ = 17379288. Its totient is φ = 5780544.

The previous prime is 11573621. The next prime is 11573659. The reversal of 11573638 is 83637511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 331 + ... + 4822.

It is an arithmetic number, because the mean of its divisors is an integer number (2172411).

Almost surely, 2^11573638 is an apocalyptic number.

11573638 is a deficient number, since it is larger than the sum of its proper divisors (5805650).

11573638 is a wasteful number, since it uses less digits than its factorization.

11573638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6278.

The product of its digits is 15120, while the sum is 34.

The square root of 11573638 is about 3402.0049970569. The cubic root of 11573638 is about 226.1986271647.

Subtracting from 11573638 its sum of digits (34), we obtain a square (11573604 = 3402²).

The spelling of 11573638 in words is "eleven million, five hundred seventy-three thousand, six hundred thirty-eight".