30688105 has 16 divisors (see below), whose sum is σ = 42666624. Its totient is φ = 20753280.

The previous prime is 30688079. The next prime is 30688121. The reversal of 30688105 is 50188603.

It is not a de Polignac number, because 30688105 - 2⁷ = 30687977 is a prime.

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, 3451 + ... + 8560.

It is an arithmetic number, because the mean of its divisors is an integer number (2666664).

Almost surely, 2^30688105 is an apocalyptic number.

30688105 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

30688105 is a deficient number, since it is larger than the sum of its proper divisors (11978519).

30688105 is a wasteful number, since it uses less digits than its factorization.

30688105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12096.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 30688105 is about 5539.6845578065. The cubic root of 30688105 is about 313.0809842606.

The spelling of 30688105 in words is "thirty million, six hundred eighty-eight thousand, one hundred five".