228378210686 has 4 divisors (see below), whose sum is σ = 342567316032. Its totient is φ = 114189105342.

The previous prime is 228378210653. The next prime is 228378210691. The reversal of 228378210686 is 686012873822.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×228378210686² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57094552670 + ... + 57094552673.

It is an arithmetic number, because the mean of its divisors is an integer number (85641829008).

Almost surely, 2^228378210686 is an apocalyptic number.

228378210686 is a deficient number, since it is larger than the sum of its proper divisors (114189105346).

228378210686 is a wasteful number, since it uses less digits than its factorization.

228378210686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114189105345.

The product of its (nonzero) digits is 3096576, while the sum is 53.

The spelling of 228378210686 in words is "two hundred twenty-eight billion, three hundred seventy-eight million, two hundred ten thousand, six hundred eighty-six".