10011720 has 32 divisors (see below), whose sum is σ = 30035520. Its totient is φ = 2669760.

The previous prime is 10011713. The next prime is 10011751. The reversal of 10011720 is 2711001.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 10011696 and 10011705.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41596 + ... + 41835.

It is an arithmetic number, because the mean of its divisors is an integer number (938610).

Almost surely, 2^10011720 is an apocalyptic number.

10011720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10011720 is an abundant number, since it is smaller than the sum of its proper divisors (20023800).

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

10011720 is a wasteful number, since it uses less digits than its factorization.

10011720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83445 (or 83441 counting only the distinct ones).

The product of its (nonzero) digits is 14, while the sum is 12.

The square root of 10011720 is about 3164.1302122384. The cubic root of 10011720 is about 215.5276027254.

Adding to 10011720 its reverse (2711001), we get a palindrome (12722721).

It can be divided in two parts, 10011 and 720, that added together give a triangular number (10731 = T₁₄₆).

The spelling of 10011720 in words is "ten million, eleven thousand, seven hundred twenty".