11273540 has 24 divisors (see below), whose sum is σ = 23737560. Its totient is φ = 4497408.

The previous prime is 11273527. The next prime is 11273551. The reversal of 11273540 is 4537211.

It can be written as a sum of positive squares in 4 ways, for example, as 3444736 + 7828804 = 1856^2 + 2798^2 .

It is a congruent number.

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, 14276 + ... + 15044.

It is an arithmetic number, because the mean of its divisors is an integer number (989065).

Almost surely, 2^11273540 is an apocalyptic number.

11273540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11273540 is an abundant number, since it is smaller than the sum of its proper divisors (12464020).

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

11273540 is a wasteful number, since it uses less digits than its factorization.

11273540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1511 (or 1509 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 11273540 is about 3357.6092685123. The cubic root of 11273540 is about 224.2264132897.

The spelling of 11273540 in words is "eleven million, two hundred seventy-three thousand, five hundred forty".