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213043124 = 22719400457
BaseRepresentation
bin11001011001011…
…00011110110100
3112211212201020002
430230230132310
5414014334444
633050130432
75164556660
oct1454543664
9484781202
10213043124
11aa2914a8
125b420a18
13351a3028
14204198a0
1513a83d4e
hexcb2c7b4

213043124 has 24 divisors (see below), whose sum is σ = 448512960. Its totient is φ = 86498496.

The previous prime is 213043123. The next prime is 213043139. The reversal of 213043124 is 421340312.

It is a junction number, because it is equal to n+sod(n) for n = 213043096 and 213043105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213043123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199697 + ... + 200760.

It is an arithmetic number, because the mean of its divisors is an integer number (18688040).

Almost surely, 2213043124 is an apocalyptic number.

It is an amenable number.

213043124 is an abundant number, since it is smaller than the sum of its proper divisors (235469836).

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

213043124 is a wasteful number, since it uses less digits than its factorization.

213043124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400487 (or 400485 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 213043124 is about 14595.9968484513. The cubic root of 213043124 is about 597.2495629441.

Adding to 213043124 its reverse (421340312), we get a palindrome (634383436).

It can be divided in two parts, 2130 and 43124, that added together give a palindrome (45254).

The spelling of 213043124 in words is "two hundred thirteen million, forty-three thousand, one hundred twenty-four".

Divisors: 1 2 4 7 14 19 28 38 76 133 266 532 400457 800914 1601828 2803199 5606398 7608683 11212796 15217366 30434732 53260781 106521562 213043124