11275720 has 16 divisors (see below), whose sum is σ = 25370460. Its totient is φ = 4510272.

The previous prime is 11275717. The next prime is 11275729. The reversal of 11275720 is 2757211.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11062276 + 213444 = 3326^2 + 462^2 .

It is not an unprimeable number, because it can be changed into a prime (11275729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140907 + ... + 140986.

Almost surely, 2^11275720 is an apocalyptic number.

11275720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11275720 is an abundant number, since it is smaller than the sum of its proper divisors (14094740).

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

11275720 is a wasteful number, since it uses less digits than its factorization.

11275720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281904 (or 281900 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 25.

The square root of 11275720 is about 3357.9338885690. The cubic root of 11275720 is about 224.2408654812.

It can be divided in two parts, 1 and 1275720, that added together give a palindrome (1275721).

The spelling of 11275720 in words is "eleven million, two hundred seventy-five thousand, seven hundred twenty".