105215340 has 48 divisors (see below), whose sum is σ = 307415808. Its totient is φ = 26837184.

The previous prime is 105215323. The next prime is 105215353. The reversal of 105215340 is 43512501.

It is a super-2 number, since 2×105215340² = 22140535542631200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36742 + ... + 39501.

It is an arithmetic number, because the mean of its divisors is an integer number (6404496).

Almost surely, 2^105215340 is an apocalyptic number.

105215340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

105215340 is an abundant number, since it is smaller than the sum of its proper divisors (202200468).

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

105215340 is a wasteful number, since it uses less digits than its factorization.

105215340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76278 (or 76276 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 105215340 is about 10257.4529002087. The cubic root of 105215340 is about 472.0916883547.

Adding to 105215340 its reverse (43512501), we get a palindrome (148727841).

The spelling of 105215340 in words is "one hundred five million, two hundred fifteen thousand, three hundred forty".