11485820 has 24 divisors (see below), whose sum is σ = 24453744. Its totient is φ = 4530816.

The previous prime is 11485811. The next prime is 11485847. The reversal of 11485820 is 2858411.

It is a super-2 number, since 2×11485820² = 263848122144800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2474 + ... + 5393.

It is an arithmetic number, because the mean of its divisors is an integer number (1018906).

Almost surely, 2^11485820 is an apocalyptic number.

11485820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11485820 is an abundant number, since it is smaller than the sum of its proper divisors (12967924).

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

11485820 is a wasteful number, since it uses less digits than its factorization.

11485820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7949 (or 7947 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 29.

The square root of 11485820 is about 3389.0736197374. The cubic root of 11485820 is about 225.6250602998.

The spelling of 11485820 in words is "eleven million, four hundred eighty-five thousand, eight hundred twenty".