228372543 has 96 divisors (see below), whose sum is σ = 425558016. Its totient is φ = 114960384.

The previous prime is 228372499. The next prime is 228372553. The reversal of 228372543 is 345273822.

It is a Cunningham number, because it is equal to 15112²-1.

It is not a de Polignac number, because 228372543 - 2⁶ = 228372479 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 228372498 and 228372507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228372553) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1798146 + ... + 1798272.

It is an arithmetic number, because the mean of its divisors is an integer number (4432896).

Almost surely, 2^228372543 is an apocalyptic number.

228372543 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

228372543 is a deficient number, since it is larger than the sum of its proper divisors (197185473).

228372543 is a wasteful number, since it uses less digits than its factorization.

228372543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253 (or 250 counting only the distinct ones).

The product of its digits is 80640, while the sum is 36.

The square root of 228372543 is about 15111.9999669137. Note that the first 4 decimals coincide. The cubic root of 228372543 is about 611.2440284461.

The spelling of 228372543 in words is "two hundred twenty-eight million, three hundred seventy-two thousand, five hundred forty-three".