228137215 has 8 divisors (see below), whose sum is σ = 282595968. Its totient is φ = 176622240.

The previous prime is 228137213. The next prime is 228137257. The reversal of 228137215 is 512731822.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 228137215 - 2¹ = 228137213 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228137213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 735772 + ... + 736081.

It is an arithmetic number, because the mean of its divisors is an integer number (35324496).

Almost surely, 2^228137215 is an apocalyptic number.

228137215 is a deficient number, since it is larger than the sum of its proper divisors (54458753).

228137215 is a wasteful number, since it uses less digits than its factorization.

228137215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1471889.

The product of its digits is 6720, while the sum is 31.

The square root of 228137215 is about 15104.2118298175. The cubic root of 228137215 is about 611.0340028025.

The spelling of 228137215 in words is "two hundred twenty-eight million, one hundred thirty-seven thousand, two hundred fifteen".