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510680420 = 22541622781
BaseRepresentation
bin11110011100000…
…101110101100100
31022120221020211122
4132130011311210
52021213233140
6122401353112
715440466125
oct3634056544
91276836748
10510680420
112422a1838
12123038798
1381a54583
144bb7604c
152ec77ab5
hex1e705d64

510680420 has 24 divisors (see below), whose sum is σ = 1098587448. Its totient is φ = 199289600.

The previous prime is 510680419. The next prime is 510680447. The reversal of 510680420 is 24086015.

It can be written as a sum of positive squares in 4 ways, for example, as 10816 + 510669604 = 104^2 + 22598^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 510680420.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 310571 + ... + 312210.

It is an arithmetic number, because the mean of its divisors is an integer number (45774477).

Almost surely, 2510680420 is an apocalyptic number.

It is an amenable number.

510680420 is an abundant number, since it is smaller than the sum of its proper divisors (587907028).

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

510680420 is a wasteful number, since it uses less digits than its factorization.

510680420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622831 (or 622829 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 510680420 is about 22598.2393119464. The cubic root of 510680420 is about 799.3121274587.

The spelling of 510680420 in words is "five hundred ten million, six hundred eighty thousand, four hundred twenty".

Divisors: 1 2 4 5 10 20 41 82 164 205 410 820 622781 1245562 2491124 3113905 6227810 12455620 25534021 51068042 102136084 127670105 255340210 510680420