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468871840 = 2552930449
BaseRepresentation
bin11011111100100…
…110101010100000
31012200021011020201
4123330212222200
51430012344330
6114305314544
714422226203
oct3374465240
91180234221
10468871840
11220736398
12111035a54
13761a6778
14463b193a
152b269eca
hex1bf26aa0

468871840 has 24 divisors (see below), whose sum is σ = 1107710100. Its totient is φ = 187548672.

The previous prime is 468871801. The next prime is 468871841. The reversal of 468871840 is 48178864.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 464661136 + 4210704 = 21556^2 + 2052^2 .

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (468871841) 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, 1465065 + ... + 1465384.

Almost surely, 2468871840 is an apocalyptic number.

468871840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

468871840 is an abundant number, since it is smaller than the sum of its proper divisors (638838260).

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

468871840 is a wasteful number, since it uses less digits than its factorization.

468871840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2930464 (or 2930456 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 46.

The square root of 468871840 is about 21653.4486860638. The cubic root of 468871840 is about 776.8754246950.

The spelling of 468871840 in words is "four hundred sixty-eight million, eight hundred seventy-one thousand, eight hundred forty".

Divisors: 1 2 4 5 8 10 16 20 32 40 80 160 2930449 5860898 11721796 14652245 23443592 29304490 46887184 58608980 93774368 117217960 234435920 468871840