228142615 has 4 divisors (see below), whose sum is σ = 273771144. Its totient is φ = 182514088.

The previous prime is 228142591. The next prime is 228142637. The reversal of 228142615 is 516241822.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 228142615 - 2⁷ = 228142487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22814257 + ... + 22814266.

It is an arithmetic number, because the mean of its divisors is an integer number (68442786).

Almost surely, 2^228142615 is an apocalyptic number.

228142615 is a deficient number, since it is larger than the sum of its proper divisors (45628529).

228142615 is an equidigital number, since it uses as much as digits as its factorization.

228142615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45628528.

The product of its digits is 7680, while the sum is 31.

The square root of 228142615 is about 15104.3905868459. The cubic root of 228142615 is about 611.0388238157.

The spelling of 228142615 in words is "two hundred twenty-eight million, one hundred forty-two thousand, six hundred fifteen".