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215312008300 = 225214471487989
BaseRepresentation
bin1100100010000110011…
…0001000010001101100
3202120202110112022002221
43020201212020101230
512011424333231200
6242525111325124
721361426605424
oct3104146102154
9676673468087
10215312008300
118334a019714
123588b6807a4
13173c46aba0c
14a5c7923484
15590286a91a
hex322198846c

215312008300 has 36 divisors (see below), whose sum is σ = 467550265840. Its totient is φ = 86065225920.

The previous prime is 215312008283. The next prime is 215312008451. The reversal of 215312008300 is 3800213512.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 599295 + ... + 888694.

Almost surely, 2215312008300 is an apocalyptic number.

215312008300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215312008300 is an abundant number, since it is smaller than the sum of its proper divisors (252238257540).

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

215312008300 is a wasteful number, since it uses less digits than its factorization.

215312008300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1489450 (or 1489443 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The spelling of 215312008300 in words is "two hundred fifteen billion, three hundred twelve million, eight thousand, three hundred".

Divisors: 1 2 4 5 10 20 25 50 100 1447 2894 5788 7235 14470 28940 36175 72350 144700 1487989 2975978 5951956 7439945 14879890 29759780 37199725 74399450 148798900 2153120083 4306240166 8612480332 10765600415 21531200830 43062401660 53828002075 107656004150 215312008300