105220530 has 48 divisors (see below), whose sum is σ = 274321944. Its totient is φ = 27982080.

The previous prime is 105220519. The next prime is 105220559. The reversal of 105220530 is 35022501.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 29582721 + 75637809 = 5439^2 + 8697^2 .

It is a super-2 number, since 2×105220530² = 22142719866961800, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36502 + ... + 39278.

Almost surely, 2^105220530 is an apocalyptic number.

105220530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

105220530 is an abundant number, since it is smaller than the sum of its proper divisors (169101414).

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

105220530 is a wasteful number, since it uses less digits than its factorization.

105220530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3211 (or 3208 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 105220530 is about 10257.7058838709. The cubic root of 105220530 is about 472.0994505802.

The spelling of 105220530 in words is "one hundred five million, two hundred twenty thousand, five hundred thirty".