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20620246620260 = 2257147287475859
BaseRepresentation
bin1001011000001000001100…
…11110011001100001100100
32201000021110102220102210102
410230010012132121201210
510200320231113322020
6111504451023443232
74225522635221210
oct454040636314144
981007412812712
1020620246620260
11662aaa7715051
122390412a56518
13b67633747101
1451404d463940
1525b5a7437475
hex12c106799864

20620246620260 has 24 divisors (see below), whose sum is σ = 49488591888960. Its totient is φ = 7069798841184.

The previous prime is 20620246620257. The next prime is 20620246620283. The reversal of 20620246620260 is 6202664202602.

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, 73643737790 + ... + 73643738069.

It is an arithmetic number, because the mean of its divisors is an integer number (2062024662040).

Almost surely, 220620246620260 is an apocalyptic number.

20620246620260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20620246620260 is an abundant number, since it is smaller than the sum of its proper divisors (28868345268700).

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

20620246620260 is a wasteful number, since it uses less digits than its factorization.

20620246620260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147287475875 (or 147287475873 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 38.

The spelling of 20620246620260 in words is "twenty trillion, six hundred twenty billion, two hundred forty-six million, six hundred twenty thousand, two hundred sixty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 147287475859 294574951718 589149903436 736437379295 1031012331013 1472874758590 2062024662026 2945749517180 4124049324052 5155061655065 10310123310130 20620246620260