228378904806 has 32 divisors (see below), whose sum is σ = 493708174848. Its totient is φ = 70011125280.

The previous prime is 228378904799. The next prime is 228378904807. The reversal of 228378904806 is 608409873822.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228378904807) 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, 5380956 + ... + 5423231.

It is an arithmetic number, because the mean of its divisors is an integer number (15428380464).

Almost surely, 2^228378904806 is an apocalyptic number.

228378904806 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

228378904806 is an abundant number, since it is smaller than the sum of its proper divisors (265329270042).

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

228378904806 is a wasteful number, since it uses less digits than its factorization.

228378904806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10804476.

The product of its (nonzero) digits is 9289728, while the sum is 57.

The spelling of 228378904806 in words is "two hundred twenty-eight billion, three hundred seventy-eight million, nine hundred four thousand, eight hundred six".