10851920 has 20 divisors (see below), whose sum is σ = 25230900. Its totient is φ = 4340736.

The previous prime is 10851913. The next prime is 10851937. The reversal of 10851920 is 2915801.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 8317456 + 2534464 = 2884^2 + 1592^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 10851920.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67745 + ... + 67904.

It is an arithmetic number, because the mean of its divisors is an integer number (1261545).

Almost surely, 2^10851920 is an apocalyptic number.

10851920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10851920 is an abundant number, since it is smaller than the sum of its proper divisors (14378980).

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

10851920 is a wasteful number, since it uses less digits than its factorization.

10851920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135662 (or 135656 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 10851920 is about 3294.2252503434. The cubic root of 10851920 is about 221.3955366208.

The spelling of 10851920 in words is "ten million, eight hundred fifty-one thousand, nine hundred twenty".