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228926829 = 376308943
BaseRepresentation
bin11011010010100…
…10010101101101
3120221202200120110
431221102111231
5432101124304
634414410233
75446563105
oct1551222555
9527680513
10228926829
1110825012a
1264800979
1338574981
1422592205
1515170289
hexda5256d

228926829 has 4 divisors (see below), whose sum is σ = 305235776. Its totient is φ = 152617884.

The previous prime is 228926827. The next prime is 228926837. The reversal of 228926829 is 928629822.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 228926829 - 21 = 228926827 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228926827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38154469 + ... + 38154474.

It is an arithmetic number, because the mean of its divisors is an integer number (76308944).

Almost surely, 2228926829 is an apocalyptic number.

It is an amenable number.

228926829 is a deficient number, since it is larger than the sum of its proper divisors (76308947).

228926829 is an equidigital number, since it uses as much as digits as its factorization.

228926829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76308946.

The product of its digits is 497664, while the sum is 48.

The square root of 228926829 is about 15130.3281193767. The cubic root of 228926829 is about 611.7381483709.

The spelling of 228926829 in words is "two hundred twenty-eight million, nine hundred twenty-six thousand, eight hundred twenty-nine".

Divisors: 1 3 76308943 228926829