30520105 has 16 divisors (see below), whose sum is σ = 45661824. Its totient is φ = 19025280.

The previous prime is 30520097. The next prime is 30520111. The reversal of 30520105 is 50102503.

It is not a de Polignac number, because 30520105 - 2³ = 30520097 is a prime.

It is a super-2 number, since 2×30520105² = 1862953618422050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39252 + ... + 40021.

It is an arithmetic number, because the mean of its divisors is an integer number (2853864).

Almost surely, 2^30520105 is an apocalyptic number.

30520105 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

30520105 is a deficient number, since it is larger than the sum of its proper divisors (15141719).

30520105 is a wasteful number, since it uses less digits than its factorization.

30520105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79296.

The product of its (nonzero) digits is 150, while the sum is 16.

The square root of 30520105 is about 5524.5004299031. The cubic root of 30520105 is about 312.5086248286.

Adding to 30520105 its reverse (50102503), we get a palindrome (80622608).

It can be divided in two parts, 3052010 and 5, that multiplied together give a triangular number (15260050 = T₅₅₂₄).

The spelling of 30520105 in words is "thirty million, five hundred twenty thousand, one hundred five".