10215380 has 48 divisors (see below), whose sum is σ = 24748416. Its totient is φ = 3469440.

The previous prime is 10215377. The next prime is 10215383. The reversal of 10215380 is 8351201.

It is an interprime number because it is at equal distance from previous prime (10215377) and next prime (10215383).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10215383) 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, 18062 + ... + 18618.

It is an arithmetic number, because the mean of its divisors is an integer number (515592).

Almost surely, 2^10215380 is an apocalyptic number.

10215380 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 10215380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12374208).

10215380 is an abundant number, since it is smaller than the sum of its proper divisors (14533036).

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

10215380 is a wasteful number, since it uses less digits than its factorization.

10215380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704 (or 702 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 10215380 is about 3196.1508099588. The cubic root of 10215380 is about 216.9792359102.

Adding to 10215380 its reverse (8351201), we get a palindrome (18566581).

The spelling of 10215380 in words is "ten million, two hundred fifteen thousand, three hundred eighty".