228261765 has 8 divisors (see below), whose sum is σ = 365218848. Its totient is φ = 121739600.

The previous prime is 228261749. The next prime is 228261767. The reversal of 228261765 is 567162822.

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

It is not a de Polignac number, because 228261765 - 2⁴ = 228261749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228261767) 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, 7608711 + ... + 7608740.

It is an arithmetic number, because the mean of its divisors is an integer number (45652356).

Almost surely, 2^228261765 is an apocalyptic number.

It is an amenable number.

228261765 is a deficient number, since it is larger than the sum of its proper divisors (136957083).

228261765 is a wasteful number, since it uses less digits than its factorization.

228261765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15217459.

The product of its digits is 80640, while the sum is 39.

The square root of 228261765 is about 15108.3342893914. The cubic root of 228261765 is about 611.1451792272.

The spelling of 228261765 in words is "two hundred twenty-eight million, two hundred sixty-one thousand, seven hundred sixty-five".