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20672438060 = 22515719134469
BaseRepresentation
bin10011010000001011…
…000101111100101100
31222100200211122212002
4103100023011330230
5314314121004220
613255150031432
71331165552501
oct232013057454
958320748762
1020672438060
11884906375a
12400b1a8578
131c45ab6991
1410017274a8
1580ece6c75
hex4d02c5f2c

20672438060 has 48 divisors (see below), whose sum is σ = 43918640640. Its totient is φ = 8173052160.

The previous prime is 20672438051. The next prime is 20672438063. The reversal of 20672438060 is 6083427602.

It is not an unprimeable number, because it can be changed into a prime (20672438063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 582506 + ... + 616974.

It is an arithmetic number, because the mean of its divisors is an integer number (914971680).

Almost surely, 220672438060 is an apocalyptic number.

20672438060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20672438060 is an abundant number, since it is smaller than the sum of its proper divisors (23246202580).

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

20672438060 is a wasteful number, since it uses less digits than its factorization.

20672438060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34826 (or 34824 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 38.

The spelling of 20672438060 in words is "twenty billion, six hundred seventy-two million, four hundred thirty-eight thousand, sixty".

Divisors: 1 2 4 5 10 20 157 191 314 382 628 764 785 955 1570 1910 3140 3820 29987 34469 59974 68938 119948 137876 149935 172345 299870 344690 599740 689380 5411633 6583579 10823266 13167158 21646532 26334316 27058165 32917895 54116330 65835790 108232660 131671580 1033621903 2067243806 4134487612 5168109515 10336219030 20672438060