10505776 has 40 divisors (see below), whose sum is σ = 21427200. Its totient is φ = 4983360.

The previous prime is 10505767. The next prime is 10505777. The reversal of 10505776 is 67750501.

It is a super-2 number, since 2×10505776² = 220742658724352, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (10505777) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29085 + ... + 29443.

It is an arithmetic number, because the mean of its divisors is an integer number (535680).

Almost surely, 2^10505776 is an apocalyptic number.

10505776 is a gapful number since it is divisible by the number (16) 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 10505776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10713600).

10505776 is an abundant number, since it is smaller than the sum of its proper divisors (10921424).

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

10505776 is a wasteful number, since it uses less digits than its factorization.

10505776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457 (or 451 counting only the distinct ones).

The product of its (nonzero) digits is 7350, while the sum is 31.

The square root of 10505776 is about 3241.2614828181. The cubic root of 10505776 is about 219.0161021778.

The spelling of 10505776 in words is "ten million, five hundred five thousand, seven hundred seventy-six".