10105215 has 16 divisors (see below), whose sum is σ = 16545408. Its totient is φ = 5263776.

The previous prime is 10105213. The next prime is 10105223. The reversal of 10105215 is 51250101.

It is not a de Polignac number, because 10105215 - 2¹ = 10105213 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 10105194 and 10105203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10105213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7189 + ... + 8478.

It is an arithmetic number, because the mean of its divisors is an integer number (1034088).

Almost surely, 2^10105215 is an apocalyptic number.

10105215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

10105215 is a deficient number, since it is larger than the sum of its proper divisors (6440193).

10105215 is a wasteful number, since it uses less digits than its factorization.

10105215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15718.

The product of its (nonzero) digits is 50, while the sum is 15.

The square root of 10105215 is about 3178.8700822777. The cubic root of 10105215 is about 216.1964305368.

Adding to 10105215 its reverse (51250101), we get a palindrome (61355316).

The spelling of 10105215 in words is "ten million, one hundred five thousand, two hundred fifteen".