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213432023460 = 22355551164081
BaseRepresentation
bin1100011011000110001…
…0100011100110100100
3202101220110000011201210
43012301202203212210
511444102044222320
6242014352551420
721264021160155
oct3066142434644
9671813004653
10213432023460
11825748a4237
1235445b52570
1317185065456
14a489d8992c
1558427b30e0
hex31b18a39a4

213432023460 has 48 divisors (see below), whose sum is σ = 597629757312. Its totient is φ = 56913292800.

The previous prime is 213432023443. The next prime is 213432023461. The reversal of 213432023460 is 64320234312.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (213432023461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3298620 + ... + 3362700.

It is an arithmetic number, because the mean of its divisors is an integer number (12450619944).

Almost surely, 2213432023460 is an apocalyptic number.

213432023460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213432023460 is an abundant number, since it is smaller than the sum of its proper divisors (384197733852).

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

213432023460 is a wasteful number, since it uses less digits than its factorization.

213432023460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119604 (or 119602 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 213432023460 its reverse (64320234312), we get a palindrome (277752257772).

The spelling of 213432023460 in words is "two hundred thirteen billion, four hundred thirty-two million, twenty-three thousand, four hundred sixty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 55511 64081 111022 128162 166533 192243 222044 256324 277555 320405 333066 384486 555110 640810 666132 768972 832665 961215 1110220 1281620 1665330 1922430 3330660 3844860 3557200391 7114400782 10671601173 14228801564 17786001955 21343202346 35572003910 42686404692 53358005865 71144007820 106716011730 213432023460