11640274 has 32 divisors (see below), whose sum is σ = 20027520. Its totient is φ = 5038848.

The previous prime is 11640271. The next prime is 11640313. The reversal of 11640274 is 47204611.

11640274 = 130² + 131² + ... + 333².

It is not an unprimeable number, because it can be changed into a prime (11640271) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 23659 + ... + 24145.

It is an arithmetic number, because the mean of its divisors is an integer number (625860).

Almost surely, 2^11640274 is an apocalyptic number.

11640274 is a deficient number, since it is larger than the sum of its proper divisors (8387246).

11640274 is a wasteful number, since it uses less digits than its factorization.

11640274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 11640274 is about 3411.7845770212. The cubic root of 11640274 is about 226.6319146068.

Adding to 11640274 its reverse (47204611), we get a palindrome (58844885).

The spelling of 11640274 in words is "eleven million, six hundred forty thousand, two hundred seventy-four".