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229832920 = 2355745823
BaseRepresentation
bin11011011001011…
…11100011011000
3121000110201111101
431230233203120
5432314123140
634450041144
75460355552
oct1554574330
9530421441
10229832920
11108809969
1264b791b4
1338801215
142274a4d2
151529d99a
hexdb2f8d8

229832920 has 16 divisors (see below), whose sum is σ = 517124160. Its totient is φ = 91933152.

The previous prime is 229832899. The next prime is 229832923. The reversal of 229832920 is 29238922.

It is a super-2 number, since 2×2298329202 = 105646342231452800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 229832920.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229832923) 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, 2872872 + ... + 2872951.

It is an arithmetic number, because the mean of its divisors is an integer number (32320260).

Almost surely, 2229832920 is an apocalyptic number.

229832920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

229832920 is an abundant number, since it is smaller than the sum of its proper divisors (287291240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

229832920 is a wasteful number, since it uses less digits than its factorization.

229832920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5745834 (or 5745830 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 229832920 is about 15160.2414228798. The cubic root of 229832920 is about 612.5441711863.

The spelling of 229832920 in words is "two hundred twenty-nine million, eight hundred thirty-two thousand, nine hundred twenty".

Divisors: 1 2 4 5 8 10 20 40 5745823 11491646 22983292 28729115 45966584 57458230 114916460 229832920