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13202230520 = 235973333911
BaseRepresentation
bin11000100101110101…
…00000110011111000
31021002002022210120202
430102322200303320
5204014232334040
610022013341332
7645110051663
oct142272406370
937062283522
1013202230520
115665351216
122685497848
13132525a32b
148d356c6da
1552409c015
hex312ea0cf8

13202230520 has 32 divisors (see below), whose sum is σ = 29708946720. Its totient is φ = 5280193920.

The previous prime is 13202230513. The next prime is 13202230523. The reversal of 13202230520 is 2503220231.

It is a super-3 number, since 3×132022305203 (a number of 31 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 13202230492 and 13202230501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13202230523) 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, 372365 + ... + 406275.

It is an arithmetic number, because the mean of its divisors is an integer number (928404585).

Almost surely, 213202230520 is an apocalyptic number.

13202230520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13202230520 is an abundant number, since it is smaller than the sum of its proper divisors (16506716200).

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

13202230520 is a wasteful number, since it uses less digits than its factorization.

13202230520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43655 (or 43651 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

Adding to 13202230520 its reverse (2503220231), we get a palindrome (15705450751).

The spelling of 13202230520 in words is "thirteen billion, two hundred two million, two hundred thirty thousand, five hundred twenty".

Divisors: 1 2 4 5 8 10 20 40 9733 19466 33911 38932 48665 67822 77864 97330 135644 169555 194660 271288 339110 389320 678220 1356440 330055763 660111526 1320223052 1650278815 2640446104 3300557630 6601115260 13202230520