11493820 has 24 divisors (see below), whose sum is σ = 25994304. Its totient is φ = 4243776.

The previous prime is 11493799. The next prime is 11493827. The reversal of 11493820 is 2839411.

It is a happy number.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11493827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21844 + ... + 22363.

It is an arithmetic number, because the mean of its divisors is an integer number (1083096).

Almost surely, 2^11493820 is an apocalyptic number.

11493820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11493820 is an abundant number, since it is smaller than the sum of its proper divisors (14500484).

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

11493820 is a wasteful number, since it uses less digits than its factorization.

11493820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44229 (or 44227 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 11493820 is about 3390.2536778241. The cubic root of 11493820 is about 225.6774315883.

The spelling of 11493820 in words is "eleven million, four hundred ninety-three thousand, eight hundred twenty".