228720470 has 16 divisors (see below), whose sum is σ = 449124048. Its totient is φ = 83171040.

The previous prime is 228720409. The next prime is 228720473. The reversal of 228720470 is 74027822.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228720473) 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, 1039529 + ... + 1039748.

It is an arithmetic number, because the mean of its divisors is an integer number (28070253).

Almost surely, 2^228720470 is an apocalyptic number.

228720470 is a deficient number, since it is larger than the sum of its proper divisors (220403578).

228720470 is a wasteful number, since it uses less digits than its factorization.

228720470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2079295.

The product of its (nonzero) digits is 12544, while the sum is 32.

The square root of 228720470 is about 15123.5071990594. The cubic root of 228720470 is about 611.5542823104.

The spelling of 228720470 in words is "two hundred twenty-eight million, seven hundred twenty thousand, four hundred seventy".