215228514 has 16 divisors (see below), whose sum is σ = 432060480. Its totient is φ = 71475600.

The previous prime is 215228513. The next prime is 215228521. The reversal of 215228514 is 415822512.

It is not an unprimeable number, because it can be changed into a prime (215228513) 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, 65062 + ... + 68289.

It is an arithmetic number, because the mean of its divisors is an integer number (27003780).

Almost surely, 2^215228514 is an apocalyptic number.

215228514 is an abundant number, since it is smaller than the sum of its proper divisors (216831966).

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

215228514 is a wasteful number, since it uses less digits than its factorization.

215228514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133625.

The product of its digits is 6400, while the sum is 30.

The square root of 215228514 is about 14670.6684919263. The cubic root of 215228514 is about 599.2848089528.

The spelling of 215228514 in words is "two hundred fifteen million, two hundred twenty-eight thousand, five hundred fourteen".