228072215 has 24 divisors (see below), whose sum is σ = 325789200. Its totient is φ = 152748288.

The previous prime is 228072191. The next prime is 228072223. The reversal of 228072215 is 512270822.

228072215 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 228072215 - 2¹² = 228068119 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 290 + ... + 21359.

It is an arithmetic number, because the mean of its divisors is an integer number (13574550).

Almost surely, 2^228072215 is an apocalyptic number.

228072215 is a deficient number, since it is larger than the sum of its proper divisors (97716985).

228072215 is a wasteful number, since it uses less digits than its factorization.

228072215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21711 (or 21704 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 228072215 is about 15102.0599588268. The cubic root of 228072215 is about 610.9759661178.

The spelling of 228072215 in words is "two hundred twenty-eight million, seventy-two thousand, two hundred fifteen".