20215300 has 36 divisors (see below), whose sum is σ = 50135680. Its totient is φ = 6930720.

The previous prime is 20215267. The next prime is 20215301. The reversal of 20215300 is 351202.

It is not an unprimeable number, because it can be changed into a prime (20215301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13740 + ... + 15139.

Almost surely, 2^20215300 is an apocalyptic number.

20215300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20215300 is an abundant number, since it is smaller than the sum of its proper divisors (29920380).

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

20215300 is a wasteful number, since it uses less digits than its factorization.

20215300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28900 (or 28893 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 20215300 is about 4496.1427913268. The cubic root of 20215300 is about 272.4123108138.

Adding to 20215300 its reverse (351202), we get a palindrome (20566502).

The spelling of 20215300 in words is "twenty million, two hundred fifteen thousand, three hundred".