215147300 has 18 divisors (see below), whose sum is σ = 466869858. Its totient is φ = 86058880.

The previous prime is 215147281. The next prime is 215147321. The reversal of 215147300 is 3741512.

It can be written as a sum of positive squares in 3 ways, for example, as 173056 + 214974244 = 416^2 + 14662^2 .

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 5 ways as a sum of consecutive naturals, for example, 1075637 + ... + 1075836.

Almost surely, 2^215147300 is an apocalyptic number.

215147300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215147300 is an abundant number, since it is smaller than the sum of its proper divisors (251722558).

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

215147300 is a wasteful number, since it uses less digits than its factorization.

215147300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2151487 (or 2151480 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 215147300 is about 14667.9003269043. The cubic root of 215147300 is about 599.2094217305.

Adding to 215147300 its reverse (3741512), we get a palindrome (218888812).

The spelling of 215147300 in words is "two hundred fifteen million, one hundred forty-seven thousand, three hundred".