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630114820 = 22531505741
BaseRepresentation
bin100101100011101…
…100101000000100
31121220200011000221
4211203230220010
52242302133240
6142305314124
721420613306
oct4543545004
91556604027
10630114820
112a3757655
12157035944
13a0710c0a
145d985976
153a4baa4a
hex258eca04

630114820 has 12 divisors (see below), whose sum is σ = 1323241164. Its totient is φ = 252045920.

The previous prime is 630114787. The next prime is 630114839. The reversal of 630114820 is 28411036.

It can be written as a sum of positive squares in 2 ways, for example, as 120077764 + 510037056 = 10958^2 + 22584^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15752851 + ... + 15752890.

It is an arithmetic number, because the mean of its divisors is an integer number (110270097).

Almost surely, 2630114820 is an apocalyptic number.

It is an amenable number.

630114820 is an abundant number, since it is smaller than the sum of its proper divisors (693126344).

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

630114820 is a wasteful number, since it uses less digits than its factorization.

630114820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31505750 (or 31505748 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 630114820 is about 25102.0879609645. The cubic root of 630114820 is about 857.3139648614.

Adding to 630114820 its reverse (28411036), we get a palindrome (658525856).

The spelling of 630114820 in words is "six hundred thirty million, one hundred fourteen thousand, eight hundred twenty".

Divisors: 1 2 4 5 10 20 31505741 63011482 126022964 157528705 315057410 630114820