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13210023020 = 2251889934949
BaseRepresentation
bin11000100110110000…
…01111010001101100
31021002121222200212212
430103120033101230
5204023231214040
610022452345552
7645233225435
oct142330172154
937077880785
1013210023020
1156697938a7
1226880152b8
131326a5818c
148d45da48c
15524adad65
hex31360f46c

13210023020 has 24 divisors (see below), whose sum is σ = 27743310000. Its totient is φ = 5283578432.

The previous prime is 13210022953. The next prime is 13210023031. The reversal of 13210023020 is 2032001231.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 13210022986 and 13210023004.

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, 360506 + ... + 395454.

It is an arithmetic number, because the mean of its divisors is an integer number (1155971250).

Almost surely, 213210023020 is an apocalyptic number.

13210023020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13210023020 is an abundant number, since it is smaller than the sum of its proper divisors (14533286980).

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

13210023020 is a wasteful number, since it uses less digits than its factorization.

13210023020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53857 (or 53855 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 13210023020 its reverse (2032001231), we get a palindrome (15242024251).

The spelling of 13210023020 in words is "thirteen billion, two hundred ten million, twenty-three thousand, twenty".

Divisors: 1 2 4 5 10 20 18899 34949 37798 69898 75596 94495 139796 174745 188990 349490 377980 698980 660501151 1321002302 2642004604 3302505755 6605011510 13210023020