228470028 has 48 divisors (see below), whose sum is σ = 540207360. Its totient is φ = 75148864.

The previous prime is 228470027. The next prime is 228470029. The reversal of 228470028 is 820074822.

228470028 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (228470027) and next prime (228470029).

It is not an unprimeable number, because it can be changed into a prime (228470027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 346363 + ... + 347021.

It is an arithmetic number, because the mean of its divisors is an integer number (11254320).

Almost surely, 2^228470028 is an apocalyptic number.

It is an amenable number.

228470028 is an abundant number, since it is smaller than the sum of its proper divisors (311737332).

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

228470028 is a wasteful number, since it uses less digits than its factorization.

228470028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006 (or 1004 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 33.

The square root of 228470028 is about 15115.2250396744. The cubic root of 228470028 is about 611.3309896407.

The spelling of 228470028 in words is "two hundred twenty-eight million, four hundred seventy thousand, twenty-eight".