228616739 has 8 divisors (see below), whose sum is σ = 247076592. Its totient is φ = 210281760.

The previous prime is 228616733. The next prime is 228616771. The reversal of 228616739 is 937616822.

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

It is a de Polignac number, because none of the positive numbers 2^k-228616739 is a prime.

It is a super-2 number, since 2×228616739² = 104531226701988242, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 228616739.

It is not an unprimeable number, because it can be changed into a prime (228616733) 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, 27392 + ... + 34749.

It is an arithmetic number, because the mean of its divisors is an integer number (30884574).

Almost surely, 2^228616739 is an apocalyptic number.

228616739 is a deficient number, since it is larger than the sum of its proper divisors (18459853).

228616739 is a wasteful number, since it uses less digits than its factorization.

228616739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62437.

The product of its digits is 217728, while the sum is 44.

The square root of 228616739 is about 15120.0773476858. The cubic root of 228616739 is about 611.4618161225.

The spelling of 228616739 in words is "two hundred twenty-eight million, six hundred sixteen thousand, seven hundred thirty-nine".