11273640 has 64 divisors (see below), whose sum is σ = 38655360. Its totient is φ = 2576640.

The previous prime is 11273629. The next prime is 11273653. The reversal of 11273640 is 4637211.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 11273640.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5871 + ... + 7550.

It is an arithmetic number, because the mean of its divisors is an integer number (603990).

Almost surely, 2^11273640 is an apocalyptic number.

11273640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11273640 is an abundant number, since it is smaller than the sum of its proper divisors (27381720).

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

11273640 is a wasteful number, since it uses less digits than its factorization.

11273640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13442 (or 13438 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 11273640 is about 3357.6241600274. The cubic root of 11273640 is about 224.2270762750.

The spelling of 11273640 in words is "eleven million, two hundred seventy-three thousand, six hundred forty".