228215709409 has 8 divisors (see below), whose sum is σ = 236104263360. Its totient is φ = 220328425296.

The previous prime is 228215709373. The next prime is 228215709433. The reversal of 228215709409 is 904907512822.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 228215709409 - 2¹⁵ = 228215676641 is a prime.

It is a super-2 number, since 2×228215709409² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228215701409) 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, 55642 + ... + 677884.

It is an arithmetic number, because the mean of its divisors is an integer number (29513032920).

Almost surely, 2^228215709409 is an apocalyptic number.

228215709409 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

228215709409 is a deficient number, since it is larger than the sum of its proper divisors (7888553951).

228215709409 is a wasteful number, since it uses less digits than its factorization.

228215709409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634919.

The product of its (nonzero) digits is 725760, while the sum is 49.

The spelling of 228215709409 in words is "two hundred twenty-eight billion, two hundred fifteen million, seven hundred nine thousand, four hundred nine".