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5215000320 = 28345179281
BaseRepresentation
bin1001101101101011…
…01001011100000000
3111110102221110120000
410312311221130000
541140020002240
62221251320000
7243142525365
oct46665513400
914412843500
105215000320
112236805a22
1210165b0000
1365156870a
1437686a46c
15207c75430
hex136d69700

5215000320 has 360 divisors, whose sum is σ = 18831249360. Its totient is φ = 1377976320.

The previous prime is 5215000267. The next prime is 5215000333. The reversal of 5215000320 is 230005125.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (360).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 5215000293 and 5215000302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 18558580 + ... + 18558860.

It is an arithmetic number, because the mean of its divisors is an integer number (52309026).

Almost surely, 25215000320 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 5215000320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9415624680).

5215000320 is an abundant number, since it is smaller than the sum of its proper divisors (13616249040).

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

5215000320 is a wasteful number, since it uses less digits than its factorization.

5215000320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493 (or 470 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 5215000320 is about 72214.9591151307. The cubic root of 5215000320 is about 1734.1424913735.

Adding to 5215000320 its reverse (230005125), we get a palindrome (5445005445).

The spelling of 5215000320 in words is "five billion, two hundred fifteen million, three hundred twenty", and thus it is an aban number.