229877145 has 24 divisors (see below), whose sum is σ = 421893576. Its totient is φ = 115388928.

The previous prime is 229877093. The next prime is 229877161. The reversal of 229877145 is 541778922.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2350089 + 227527056 = 1533^2 + 15084^2 .

It is not a de Polignac number, because 229877145 - 2⁷ = 229877017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 229877145.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 149482 + ... + 151011.

It is an arithmetic number, because the mean of its divisors is an integer number (17578899).

Almost surely, 2^229877145 is an apocalyptic number.

It is an amenable number.

229877145 is a deficient number, since it is larger than the sum of its proper divisors (192016431).

229877145 is a wasteful number, since it uses less digits than its factorization.

229877145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300521 (or 300518 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The square root of 229877145 is about 15161.6999376719. The cubic root of 229877145 is about 612.5834577378.

The spelling of 229877145 in words is "two hundred twenty-nine million, eight hundred seventy-seven thousand, one hundred forty-five".