10215000 has 120 divisors (see below), whose sum is σ = 34723260. Its totient is φ = 2712000.

The previous prime is 10214959. The next prime is 10215001. The reversal of 10215000 is 51201.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10215001) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 44887 + ... + 45113.

Almost surely, 2^10215000 is an apocalyptic number.

10215000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10215000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17361630).

10215000 is an abundant number, since it is smaller than the sum of its proper divisors (24508260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10215000 is a wasteful number, since it uses less digits than its factorization.

10215000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259 (or 237 counting only the distinct ones).

The product of its (nonzero) digits is 10, while the sum is 9.

The square root of 10215000 is about 3196.0913628994. The cubic root of 10215000 is about 216.9765454203.

Adding to 10215000 its reverse (51201), we get a palindrome (10266201).

The spelling of 10215000 in words is "ten million, two hundred fifteen thousand".