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255038620 = 22512751931
BaseRepresentation
bin11110011001110…
…01010010011100
3122202220022012211
433030321102130
51010242213440
641150210204
76214535554
oct1714712234
9582808184
10255038620
11120a65321
12714b3964
1340ab7c35
1425c2c164
15175cbeea
hexf33949c

255038620 has 12 divisors (see below), whose sum is σ = 535581144. Its totient is φ = 102015440.

The previous prime is 255038587. The next prime is 255038629. The reversal of 255038620 is 26830552.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255038629) 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, 6375946 + ... + 6375985.

It is an arithmetic number, because the mean of its divisors is an integer number (44631762).

Almost surely, 2255038620 is an apocalyptic number.

255038620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255038620 is an abundant number, since it is smaller than the sum of its proper divisors (280542524).

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

255038620 is a wasteful number, since it uses less digits than its factorization.

255038620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12751940 (or 12751938 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 255038620 is about 15969.9286159958. The cubic root of 255038620 is about 634.1645822557.

The spelling of 255038620 in words is "two hundred fifty-five million, thirty-eight thousand, six hundred twenty".

Divisors: 1 2 4 5 10 20 12751931 25503862 51007724 63759655 127519310 255038620