215245030 has 64 divisors (see below), whose sum is σ = 520224768. Its totient is φ = 61925760.

The previous prime is 215245003. The next prime is 215245067. The reversal of 215245030 is 30542512.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 215244992 and 215245010.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 742 + ... + 20761.

It is an arithmetic number, because the mean of its divisors is an integer number (8128512).

Almost surely, 2^215245030 is an apocalyptic number.

215245030 is an abundant number, since it is smaller than the sum of its proper divisors (304979738).

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

215245030 is a wasteful number, since it uses less digits than its factorization.

215245030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21541.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 215245030 is about 14671.2313729966. The cubic root of 215245030 is about 599.3001376757.

Adding to 215245030 its reverse (30542512), we get a palindrome (245787542).

The spelling of 215245030 in words is "two hundred fifteen million, two hundred forty-five thousand, thirty".