228397398 has 16 divisors (see below), whose sum is σ = 471530496. Its totient is φ = 73676520.

The previous prime is 228397373. The next prime is 228397399. The reversal of 228397398 is 893793822.

It is a happy number.

228397398 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 228397398.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228397399) 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, 613786 + ... + 614157.

It is an arithmetic number, because the mean of its divisors is an integer number (29470656).

Almost surely, 2^228397398 is an apocalyptic number.

228397398 is an abundant number, since it is smaller than the sum of its proper divisors (243133098).

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

228397398 is a wasteful number, since it uses less digits than its factorization.

228397398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1227979.

The product of its digits is 1306368, while the sum is 51.

The square root of 228397398 is about 15112.8223042554. The cubic root of 228397398 is about 611.2662026225.

It can be divided in two parts, 2283 and 97398, that added together give a triangular number (99681 = T₄₄₆).

The spelling of 228397398 in words is "two hundred twenty-eight million, three hundred ninety-seven thousand, three hundred ninety-eight".