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2870508420 = 22325131226713
BaseRepresentation
bin1010101100011000…
…0111101110000100
321102001100221021200
42223012013232010
521334322232140
61152500542500
7131063630133
oct25306075604
97361327250
102870508420
11124336650a
126813b1a30
133699162c0
141d333991a
1511c016030
hexab187b84

2870508420 has 72 divisors (see below), whose sum is σ = 9377001816. Its totient is φ = 706586112.

The previous prime is 2870508397. The next prime is 2870508427. The reversal of 2870508420 is 248050782.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 263997504 + 2606510916 = 16248^2 + 51054^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (2870508427) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 611017 + ... + 615696.

Almost surely, 22870508420 is an apocalyptic number.

2870508420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2870508420 is an abundant number, since it is smaller than the sum of its proper divisors (6506493396).

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

2870508420 is a wasteful number, since it uses less digits than its factorization.

2870508420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1226741 (or 1226736 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The square root of 2870508420 is about 53577.1259027582. The cubic root of 2870508420 is about 1421.1926137652.

The spelling of 2870508420 in words is "two billion, eight hundred seventy million, five hundred eight thousand, four hundred twenty".

Divisors: 1 2 3 4 5 6 9 10 12 13 15 18 20 26 30 36 39 45 52 60 65 78 90 117 130 156 180 195 234 260 390 468 585 780 1170 2340 1226713 2453426 3680139 4906852 6133565 7360278 11040417 12267130 14720556 15947269 18400695 22080834 24534260 31894538 36801390 44161668 47841807 55202085 63789076 73602780 79736345 95683614 110404170 143525421 159472690 191367228 220808340 239209035 287050842 318945380 478418070 574101684 717627105 956836140 1435254210 2870508420