10539920 has 20 divisors (see below), whose sum is σ = 24505500. Its totient is φ = 4215936.

The previous prime is 10539917. The next prime is 10539929. The reversal of 10539920 is 2993501.

It can be written as a sum of positive squares in 2 ways, for example, as 3400336 + 7139584 = 1844^2 + 2672^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×10539920² = 222179827212800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10539929) 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, 65795 + ... + 65954.

It is an arithmetic number, because the mean of its divisors is an integer number (1225275).

Almost surely, 2^10539920 is an apocalyptic number.

10539920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10539920 is an abundant number, since it is smaller than the sum of its proper divisors (13965580).

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

10539920 is a wasteful number, since it uses less digits than its factorization.

10539920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131762 (or 131756 counting only the distinct ones).

The product of its (nonzero) digits is 2430, while the sum is 29.

The square root of 10539920 is about 3246.5242953041. The cubic root of 10539920 is about 219.2531146262.

The spelling of 10539920 in words is "ten million, five hundred thirty-nine thousand, nine hundred twenty".