11742280 has 32 divisors (see below), whose sum is σ = 28823040. Its totient is φ = 4269760.

The previous prime is 11742251. The next prime is 11742299. The reversal of 11742280 is 8224711.

It is a happy number.

It is a super-2 number, since 2×11742280² = 275762279196800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12904 + ... + 13783.

It is an arithmetic number, because the mean of its divisors is an integer number (900720).

Almost surely, 2^11742280 is an apocalyptic number.

11742280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11742280 is an abundant number, since it is smaller than the sum of its proper divisors (17080760).

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

11742280 is a wasteful number, since it uses less digits than its factorization.

11742280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26709 (or 26705 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 11742280 is about 3426.7010374411. The cubic root of 11742280 is about 227.2919968147.

Adding to 11742280 its reverse (8224711), we get a palindrome (19966991).

The spelling of 11742280 in words is "eleven million, seven hundred forty-two thousand, two hundred eighty".