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212819631472 = 247435912
BaseRepresentation
bin1100011000110100001…
…0011101110101110000
3202100022202200102212001
43012031002131311300
511441323311201342
6241433515143344
721242604006610
oct3061502356560
9670282612761
10212819631472
1182290152058
12352b4a44b54
13170b821b326
14a42c8d8a40
155808b488b7
hex318d09dd70

212819631472 has 30 divisors (see below), whose sum is σ = 471254280504. Its totient is φ = 91206321120.

The previous prime is 212819631421. The next prime is 212819631539. The reversal of 212819631472 is 274136918212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4860397 + ... + 4903987.

Almost surely, 2212819631472 is an apocalyptic number.

It is an amenable number.

212819631472 is an abundant number, since it is smaller than the sum of its proper divisors (258434649032).

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

212819631472 is an frugal number, since it uses more digits than its factorization.

212819631472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87197 (or 43600 counting only the distinct ones).

The product of its digits is 290304, while the sum is 46.

The spelling of 212819631472 in words is "two hundred twelve billion, eight hundred nineteen million, six hundred thirty-one thousand, four hundred seventy-two".

Divisors: 1 2 4 7 8 14 16 28 56 112 43591 87182 174364 305137 348728 610274 697456 1220548 2441096 4882192 1900175281 3800350562 7600701124 13301226967 15201402248 26602453934 30402804496 53204907868 106409815736 212819631472