228242043 has 20 divisors (see below), whose sum is σ = 342024408. Its totient is φ = 151683840.

The previous prime is 228242029. The next prime is 228242059. The reversal of 228242043 is 340242822.

It is not a de Polignac number, because 228242043 - 2²⁵ = 194687611 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 228241998 and 228242016.

It is not an unprimeable number, because it can be changed into a prime (228242023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 22555 + ... + 31067.

Almost surely, 2^228242043 is an apocalyptic number.

228242043 is a deficient number, since it is larger than the sum of its proper divisors (113782365).

228242043 is an equidigital number, since it uses as much as digits as its factorization.

228242043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8856 (or 8847 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

The square root of 228242043 is about 15107.6815891784. The cubic root of 228242043 is about 611.1275775753.

Adding to 228242043 its reverse (340242822), we get a palindrome (568484865).

The spelling of 228242043 in words is "two hundred twenty-eight million, two hundred forty-two thousand, forty-three".