228472872 has 32 divisors (see below), whose sum is σ = 601245600. Its totient is φ = 72149184.

The previous prime is 228472847. The next prime is 228472897. The reversal of 228472872 is 278274822.

228472872 is nontrivially palindromic in base 7.

It is an interprime number because it is at equal distance from previous prime (228472847) and next prime (228472897).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 250063 + ... + 250974.

It is an arithmetic number, because the mean of its divisors is an integer number (18788925).

Almost surely, 2^228472872 is an apocalyptic number.

It is an amenable number.

228472872 is an abundant number, since it is smaller than the sum of its proper divisors (372772728).

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

228472872 is a wasteful number, since it uses less digits than its factorization.

228472872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501065 (or 501061 counting only the distinct ones).

The product of its digits is 200704, while the sum is 42.

The square root of 228472872 is about 15115.3191167107. The cubic root of 228472872 is about 611.3335262508. Note that the first 3 decimals are identical.

The spelling of 228472872 in words is "two hundred twenty-eight million, four hundred seventy-two thousand, eight hundred seventy-two".