11393820 has 36 divisors (see below), whose sum is σ = 34561800. Its totient is φ = 3038304.

The previous prime is 11393813. The next prime is 11393821. The reversal of 11393820 is 2839311.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11393821) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31470 + ... + 31829.

It is an arithmetic number, because the mean of its divisors is an integer number (960050).

Almost surely, 2^11393820 is an apocalyptic number.

11393820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11393820 is an abundant number, since it is smaller than the sum of its proper divisors (23167980).

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

11393820 is a wasteful number, since it uses less digits than its factorization.

11393820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63314 (or 63309 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 11393820 is about 3375.4733001462. The cubic root of 11393820 is about 225.0210350704.

The spelling of 11393820 in words is "eleven million, three hundred ninety-three thousand, eight hundred twenty".