228781743 has 8 divisors (see below), whose sum is σ = 306576000. Its totient is φ = 151754328.

The previous prime is 228781739. The next prime is 228781789. The reversal of 228781743 is 347187822.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 228781743 - 2² = 228781739 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 228781695 and 228781704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228781843) 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, 191013 + ... + 192206.

It is an arithmetic number, because the mean of its divisors is an integer number (38322000).

Almost surely, 2^228781743 is an apocalyptic number.

228781743 is a deficient number, since it is larger than the sum of its proper divisors (77794257).

228781743 is a wasteful number, since it uses less digits than its factorization.

228781743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383421.

The product of its digits is 150528, while the sum is 42.

The square root of 228781743 is about 15125.5328170614. The cubic root of 228781743 is about 611.6088881499.

The spelling of 228781743 in words is "two hundred twenty-eight million, seven hundred eighty-one thousand, seven hundred forty-three".