105530390 has 32 divisors (see below), whose sum is σ = 229863744. Its totient is φ = 34053120.

The previous prime is 105530387. The next prime is 105530431. The reversal of 105530390 is 93035501.

It is a super-2 number, since 2×105530390² = 22273326427104200, which contains 22 as substring.

It is a congruent number.

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, 43151 + ... + 45530.

It is an arithmetic number, because the mean of its divisors is an integer number (7183242).

Almost surely, 2^105530390 is an apocalyptic number.

105530390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

105530390 is an abundant number, since it is smaller than the sum of its proper divisors (124333354).

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

105530390 is a wasteful number, since it uses less digits than its factorization.

105530390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88712.

The product of its (nonzero) digits is 2025, while the sum is 26.

The square root of 105530390 is about 10272.7985476208. The cubic root of 105530390 is about 472.5624190842.

Adding to 105530390 its reverse (93035501), we get a palindrome (198565891).

The spelling of 105530390 in words is "one hundred five million, five hundred thirty thousand, three hundred ninety".