215400130 has 16 divisors (see below), whose sum is σ = 422967744. Its totient is φ = 78327280.

The previous prime is 215400079. The next prime is 215400137. The reversal of 215400130 is 31004512.

It is not an unprimeable number, because it can be changed into a prime (215400137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 978982 + ... + 979201.

It is an arithmetic number, because the mean of its divisors is an integer number (26435484).

Almost surely, 2^215400130 is an apocalyptic number.

215400130 is a deficient number, since it is larger than the sum of its proper divisors (207567614).

215400130 is a wasteful number, since it uses less digits than its factorization.

215400130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1958201.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 215400130 is about 14676.5162760105. The cubic root of 215400130 is about 599.4440498396. Note that the first 3 decimals are identical.

Adding to 215400130 its reverse (31004512), we get a palindrome (246404642).

The spelling of 215400130 in words is "two hundred fifteen million, four hundred thousand, one hundred thirty".