11229640 has 32 divisors (see below), whose sum is σ = 25748280. Its totient is φ = 4406272.

The previous prime is 11229637. The next prime is 11229649. The reversal of 11229640 is 4692211.

11229640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 10876804 + 352836 = 3298^2 + 594^2 .

It is a super-2 number, since 2×11229640² = 252209629059200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11229649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 529 + ... + 4768.

Almost surely, 2^11229640 is an apocalyptic number.

11229640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11229640 is an abundant number, since it is smaller than the sum of its proper divisors (14518640).

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

11229640 is a wasteful number, since it uses less digits than its factorization.

11229640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5361 (or 5357 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 11229640 is about 3351.0655021948. The cubic root of 11229640 is about 223.9349832564.

The spelling of 11229640 in words is "eleven million, two hundred twenty-nine thousand, six hundred forty".