11277644 has 36 divisors (see below), whose sum is σ = 23164344. Its totient is φ = 4790016.

The previous prime is 11277631. The next prime is 11277649. The reversal of 11277644 is 44677211.

It is a self number, because there is not a number n which added to its sum of digits gives 11277644.

It is not an unprimeable number, because it can be changed into a prime (11277649) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31772 + ... + 32124.

It is an arithmetic number, because the mean of its divisors is an integer number (643454).

Almost surely, 2^11277644 is an apocalyptic number.

11277644 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11277644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11582172).

11277644 is an abundant number, since it is smaller than the sum of its proper divisors (11886700).

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

11277644 is a wasteful number, since it uses less digits than its factorization.

11277644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534 (or 525 counting only the distinct ones).

The product of its digits is 9408, while the sum is 32.

The square root of 11277644 is about 3358.2203620370. The cubic root of 11277644 is about 224.2536189872.

The spelling of 11277644 in words is "eleven million, two hundred seventy-seven thousand, six hundred forty-four".