10539720 has 80 divisors (see below), whose sum is σ = 35436060. Its totient is φ = 2809728.

The previous prime is 10539719. The next prime is 10539733. The reversal of 10539720 is 2793501.

It can be written as a sum of positive squares in 2 ways, for example, as 9696996 + 842724 = 3114^2 + 918^2 .

It is a super-2 number, since 2×10539720² = 222171395356800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1614 + ... + 4866.

Almost surely, 2^10539720 is an apocalyptic number.

10539720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10539720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17718030).

10539720 is an abundant number, since it is smaller than the sum of its proper divisors (24896340).

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

10539720 is a wasteful number, since it uses less digits than its factorization.

10539720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3276 (or 3263 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

The square root of 10539720 is about 3246.4934929859. The cubic root of 10539720 is about 219.2517278066.

The spelling of 10539720 in words is "ten million, five hundred thirty-nine thousand, seven hundred twenty".