11267820 has 72 divisors (see below), whose sum is σ = 34791120. Its totient is φ = 2951040.

The previous prime is 11267807. The next prime is 11267843. The reversal of 11267820 is 2876211.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10090 + ... + 11150.

It is an arithmetic number, because the mean of its divisors is an integer number (483210).

Almost surely, 2^11267820 is an apocalyptic number.

11267820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11267820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17395560).

11267820 is an abundant number, since it is smaller than the sum of its proper divisors (23523300).

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

11267820 is a wasteful number, since it uses less digits than its factorization.

11267820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1135 (or 1130 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 11267820 is about 3356.7573638856. The cubic root of 11267820 is about 224.1884840009.

The spelling of 11267820 in words is "eleven million, two hundred sixty-seven thousand, eight hundred twenty".