10505412 has 18 divisors (see below), whose sum is σ = 26555438. Its totient is φ = 3501792.

The previous prime is 10505401. The next prime is 10505413. The reversal of 10505412 is 21450501.

It can be written as a sum of positive squares in only one way, i.e., 10458756 + 46656 = 3234^2 + 216^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×10505412² = 220727362579488, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10505413) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 145873 + ... + 145944.

Almost surely, 2^10505412 is an apocalyptic number.

10505412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10505412 is an abundant number, since it is smaller than the sum of its proper divisors (16050026).

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

10505412 is a wasteful number, since it uses less digits than its factorization.

10505412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291827 (or 291822 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 10505412 is about 3241.2053313544. The cubic root of 10505412 is about 219.0135726873.

Adding to 10505412 its reverse (21450501), we get a palindrome (31955913).

The spelling of 10505412 in words is "ten million, five hundred five thousand, four hundred twelve".