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212869460 = 22573211691
BaseRepresentation
bin11001011000000…
…10000101010100
3112211112220000002
430230002011110
5413443310320
633042310432
75163234446
oct1454020524
9484486002
10212869460
11aa182a81
125b358418
1335141c7b
14203b2496
1513a4c675
hexcb02154

212869460 has 48 divisors (see below), whose sum is σ = 455956032. Its totient is φ = 83462400.

The previous prime is 212869441. The next prime is 212869493. The reversal of 212869460 is 64968212.

212869460 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 307715 + ... + 308405.

It is an arithmetic number, because the mean of its divisors is an integer number (9499084).

Almost surely, 2212869460 is an apocalyptic number.

212869460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212869460 is an abundant number, since it is smaller than the sum of its proper divisors (243086572).

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

212869460 is a wasteful number, since it uses less digits than its factorization.

212869460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 984 (or 982 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 212869460 is about 14590.0466071908. The cubic root of 212869460 is about 597.0872343947.

The spelling of 212869460 in words is "two hundred twelve million, eight hundred sixty-nine thousand, four hundred sixty".

Divisors: 1 2 4 5 10 20 73 146 211 292 365 422 691 730 844 1055 1382 1460 2110 2764 3455 4220 6910 13820 15403 30806 50443 61612 77015 100886 145801 154030 201772 252215 291602 308060 504430 583204 729005 1008860 1458010 2916020 10643473 21286946 42573892 53217365 106434730 212869460