11288440 has 32 divisors (see below), whose sum is σ = 25526160. Its totient is φ = 4492800.

The previous prime is 11288437. The next prime is 11288443. The reversal of 11288440 is 4488211.

It is an interprime number because it is at equal distance from previous prime (11288437) and next prime (11288443).

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 11288399 and 11288408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11288443) 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, 9055 + ... + 10225.

Almost surely, 2^11288440 is an apocalyptic number.

11288440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11288440 is an abundant number, since it is smaller than the sum of its proper divisors (14237720).

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

11288440 is a wasteful number, since it uses less digits than its factorization.

11288440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1423 (or 1419 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 28.

The square root of 11288440 is about 3359.8273765180. The cubic root of 11288440 is about 224.3251549077.

The spelling of 11288440 in words is "eleven million, two hundred eighty-eight thousand, four hundred forty".