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213384512 = 2611476449
BaseRepresentation
bin11001011011111…
…11110101000000
3112212112001112002
430231333311000
5414111301022
633101323132
75200511165
oct1455776500
9485461462
10213384512
11aa4a4a40
125b5664a8
1335292533
14204a806c
1513b00092
hexcb7fd40

213384512 has 56 divisors (see below), whose sum is σ = 471830400. Its totient is φ = 94914560.

The previous prime is 213384503. The next prime is 213384529. The reversal of 213384512 is 215483312.

It is a happy number.

It is a super-2 number, since 2×2133845122 = 91065899922956288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29864 + ... + 36312.

Almost surely, 2213384512 is an apocalyptic number.

213384512 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213384512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235915200).

213384512 is an abundant number, since it is smaller than the sum of its proper divisors (258445888).

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

213384512 is a wasteful number, since it uses less digits than its factorization.

213384512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6519 (or 6509 counting only the distinct ones).

The product of its digits is 5760, while the sum is 29.

The square root of 213384512 is about 14607.6867436292. The cubic root of 213384512 is about 597.5684107871.

The spelling of 213384512 in words is "two hundred thirteen million, three hundred eighty-four thousand, five hundred twelve".

Divisors: 1 2 4 8 11 16 22 32 44 47 64 88 94 176 188 352 376 517 704 752 1034 1504 2068 3008 4136 6449 8272 12898 16544 25796 33088 51592 70939 103184 141878 206368 283756 303103 412736 567512 606206 1135024 1212412 2270048 2424824 3334133 4540096 4849648 6668266 9699296 13336532 19398592 26673064 53346128 106692256 213384512