11449820 has 12 divisors (see below), whose sum is σ = 24044664. Its totient is φ = 4579920.

The previous prime is 11449807. The next prime is 11449829. The reversal of 11449820 is 2894411.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11449829) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 286226 + ... + 286265.

It is an arithmetic number, because the mean of its divisors is an integer number (2003722).

Almost surely, 2^11449820 is an apocalyptic number.

11449820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11449820 is an abundant number, since it is smaller than the sum of its proper divisors (12594844).

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

11449820 is a wasteful number, since it uses less digits than its factorization.

11449820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572500 (or 572498 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 11449820 is about 3383.7582655976. The cubic root of 11449820 is about 225.3890880866.

The spelling of 11449820 in words is "eleven million, four hundred forty-nine thousand, eight hundred twenty".