11071644 has 12 divisors (see below), whose sum is σ = 25833864. Its totient is φ = 3690544.

The previous prime is 11071631. The next prime is 11071663. The reversal of 11071644 is 44617011.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 461307 + ... + 461330.

It is an arithmetic number, because the mean of its divisors is an integer number (2152822).

Almost surely, 2^11071644 is an apocalyptic number.

It is an amenable number.

11071644 is an abundant number, since it is smaller than the sum of its proper divisors (14762220).

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

11071644 is a wasteful number, since it uses less digits than its factorization.

11071644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 922644 (or 922642 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 11071644 is about 3327.4080002308. The cubic root of 11071644 is about 222.8797974058.

Adding to 11071644 its reverse (44617011), we get a palindrome (55688655).

The spelling of 11071644 in words is "eleven million, seventy-one thousand, six hundred forty-four".