10215905 has 16 divisors (see below), whose sum is σ = 14110464. Its totient is φ = 6955200.

The previous prime is 10215883. The next prime is 10215911. The reversal of 10215905 is 50951201.

It is not a de Polignac number, because 10215905 - 2⁸ = 10215649 is a prime.

It is a Duffinian number.

It is a Curzon 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, 4319 + ... + 6251.

It is an arithmetic number, because the mean of its divisors is an integer number (881904).

Almost surely, 2^10215905 is an apocalyptic number.

It is an amenable number.

10215905 is a deficient number, since it is larger than the sum of its proper divisors (3894559).

10215905 is a wasteful number, since it uses less digits than its factorization.

10215905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2096.

The product of its (nonzero) digits is 450, while the sum is 23.

The square root of 10215905 is about 3196.2329389455. The cubic root of 10215905 is about 216.9829529248.

The spelling of 10215905 in words is "ten million, two hundred fifteen thousand, nine hundred five".