10215345 has 32 divisors (see below), whose sum is σ = 18800640. Its totient is φ = 4639680.

The previous prime is 10215343. The next prime is 10215347. The reversal of 10215345 is 54351201.

It is an interprime number because it is at equal distance from previous prime (10215343) and next prime (10215347).

It is not a de Polignac number, because 10215345 - 2¹ = 10215343 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10215343) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28276 + ... + 28634.

It is an arithmetic number, because the mean of its divisors is an integer number (587520).

Almost surely, 2^10215345 is an apocalyptic number.

10215345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10215345 is a deficient number, since it is larger than the sum of its proper divisors (8585295).

10215345 is a wasteful number, since it uses less digits than its factorization.

10215345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 10215345 is about 3196.1453346179. The cubic root of 10215345 is about 216.9789881047.

Adding to 10215345 its reverse (54351201), we get a palindrome (64566546).

The spelling of 10215345 in words is "ten million, two hundred fifteen thousand, three hundred forty-five".