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213002412 = 223721512399
BaseRepresentation
bin11001011001000…
…10100010101100
3112211210122101020
430230202202230
5414012034122
633045214140
75164330200
oct1454424254
9484718336
10213002412
11aa263957
125b401350
133518a63c
1420408b00
1513a76c5c
hexcb228ac

213002412 has 72 divisors (see below), whose sum is σ = 582220800. Its totient is φ = 60429600.

The previous prime is 213002399. The next prime is 213002417. The reversal of 213002412 is 214200312.

It is a junction number, because it is equal to n+sod(n) for n = 213002391 and 213002400.

It is not an unprimeable number, because it can be changed into a prime (213002417) 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, 87589 + ... + 89987.

It is an arithmetic number, because the mean of its divisors is an integer number (8086400).

Almost surely, 2213002412 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213002412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (291110400).

213002412 is an abundant number, since it is smaller than the sum of its proper divisors (369218388).

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

213002412 is a wasteful number, since it uses less digits than its factorization.

213002412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2571 (or 2562 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 213002412 is about 14594.6021528509. The cubic root of 213002412 is about 597.2115162288.

Adding to 213002412 its reverse (214200312), we get a palindrome (427202724).

The spelling of 213002412 in words is "two hundred thirteen million, two thousand, four hundred twelve".

Divisors: 1 2 3 4 6 7 12 14 21 28 42 49 84 98 147 151 196 294 302 453 588 604 906 1057 1812 2114 2399 3171 4228 4798 6342 7197 7399 9596 12684 14394 14798 16793 22197 28788 29596 33586 44394 50379 67172 88788 100758 117551 201516 235102 352653 362249 470204 705306 724498 1086747 1410612 1448996 2173494 2535743 4346988 5071486 7607229 10142972 15214458 17750201 30428916 35500402 53250603 71000804 106501206 213002412