10921770 has 64 divisors (see below), whose sum is σ = 30672000. Its totient is φ = 2757888.

The previous prime is 10921759. The next prime is 10921783. The reversal of 10921770 is 7712901.

10921770 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 31 ways as a sum of consecutive naturals, for example, 4066 + ... + 6194.

It is an arithmetic number, because the mean of its divisors is an integer number (479250).

Almost surely, 2^10921770 is an apocalyptic number.

10921770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 10921770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15336000).

10921770 is an abundant number, since it is smaller than the sum of its proper divisors (19750230).

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

10921770 is a wasteful number, since it uses less digits than its factorization.

10921770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2164 (or 2158 counting only the distinct ones).

The product of its (nonzero) digits is 882, while the sum is 27.

The square root of 10921770 is about 3304.8101307034. The cubic root of 10921770 is about 221.8695362008.

The spelling of 10921770 in words is "ten million, nine hundred twenty-one thousand, seven hundred seventy".