228467720450 has 54 divisors (see below), whose sum is σ = 444380554569. Its totient is φ = 87383993840.

The previous prime is 228467720431. The next prime is 228467720479. The reversal of 228467720450 is 54027764822.

It can be written as a sum of positive squares in 2 ways, for example, as 223898366041 + 4569354409 = 473179^2 + 67597^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=337985.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 228467720395 and 228467720404.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 77735081 + ... + 77738019.

Almost surely, 2^228467720450 is an apocalyptic number.

228467720450 is a deficient number, since it is larger than the sum of its proper divisors (215912834119).

228467720450 is an frugal number, since it uses more digits than its factorization.

228467720450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5936 (or 2969 counting only the distinct ones).

The product of its (nonzero) digits is 1505280, while the sum is 47.

The spelling of 228467720450 in words is "two hundred twenty-eight billion, four hundred sixty-seven million, seven hundred twenty thousand, four hundred fifty".