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20801006970 = 2355691218571
BaseRepresentation
bin10011010111110101…
…100010110101111010
31222200122202122020120
4103113311202311322
5320100024210340
613320021434110
71334316433122
oct232765426572
958618678216
1020801006970
118904698457
12404626b936
131c66620c63
141014833c82
1581b2414d0
hex4d7d62d7a

20801006970 has 32 divisors (see below), whose sum is σ = 50010194880. Its totient is φ = 5537182080.

The previous prime is 20801006957. The next prime is 20801006971. The reversal of 20801006970 is 7960010802.

It is not an unprimeable number, because it can be changed into a prime (20801006971) 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, 592216 + ... + 626355.

It is an arithmetic number, because the mean of its divisors is an integer number (1562818590).

Almost surely, 220801006970 is an apocalyptic number.

20801006970 is an abundant number, since it is smaller than the sum of its proper divisors (29209187910).

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

20801006970 is a wasteful number, since it uses less digits than its factorization.

20801006970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1219150.

The product of its (nonzero) digits is 6048, while the sum is 33.

The spelling of 20801006970 in words is "twenty billion, eight hundred one million, six thousand, nine hundred seventy".

Divisors: 1 2 3 5 6 10 15 30 569 1138 1707 2845 3414 5690 8535 17070 1218571 2437142 3655713 6092855 7311426 12185710 18278565 36557130 693366899 1386733798 2080100697 3466834495 4160201394 6933668990 10400503485 20801006970