228172416860 has 24 divisors (see below), whose sum is σ = 479238772320. Its totient is φ = 91254357824.

The previous prime is 228172416821. The next prime is 228172416863. The reversal of 228172416860 is 68614271822.

It is a super-2 number, since 2×228172416860² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228172416863) 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, 784544 + ... + 1035303.

It is an arithmetic number, because the mean of its divisors is an integer number (19968282180).

Almost surely, 2^228172416860 is an apocalyptic number.

228172416860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228172416860 is an abundant number, since it is smaller than the sum of its proper divisors (251066355460).

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

228172416860 is a wasteful number, since it uses less digits than its factorization.

228172416860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1826125 (or 1826123 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 47.

The spelling of 228172416860 in words is "two hundred twenty-eight billion, one hundred seventy-two million, four hundred sixteen thousand, eight hundred sixty".