215420130 has 48 divisors (see below), whose sum is σ = 562179384. Its totient is φ = 57231360.

The previous prime is 215420113. The next prime is 215420131. The reversal of 215420130 is 31024512.

215420130 is a `hidden beast` number, since 215 + 420 + 1 + 30 = 666.

215420130 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 72641529 + 142778601 = 8523^2 + 11949^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (215420131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20610 + ... + 29250.

Almost surely, 2^215420130 is an apocalyptic number.

215420130 is an abundant number, since it is smaller than the sum of its proper divisors (346759254).

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

215420130 is a wasteful number, since it uses less digits than its factorization.

215420130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8931 (or 8928 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 215420130 is about 14677.1976207994. The cubic root of 215420130 is about 599.4626021496.

Adding to 215420130 its reverse (31024512), we get a palindrome (246444642).

The spelling of 215420130 in words is "two hundred fifteen million, four hundred twenty thousand, one hundred thirty".