11138530 has 32 divisors (see below), whose sum is σ = 22063104. Its totient is φ = 4022976.

The previous prime is 11138527. The next prime is 11138563. The reversal of 11138530 is 3583111.

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, 5199 + ... + 7021.

It is an arithmetic number, because the mean of its divisors is an integer number (689472).

Almost surely, 2^11138530 is an apocalyptic number.

11138530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11138530 is a deficient number, since it is larger than the sum of its proper divisors (10924574).

11138530 is a wasteful number, since it uses less digits than its factorization.

11138530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1890.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 11138530 is about 3337.4436324828. The cubic root of 11138530 is about 223.3277169945.

The spelling of 11138530 in words is "eleven million, one hundred thirty-eight thousand, five hundred thirty".