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20701210670 = 257295731581
BaseRepresentation
bin10011010001111000…
…110110100000101110
31222102200222110110022
4103101320312200232
5314344002220140
613302054442142
71331665246610
oct232170664056
958380873408
1020701210670
118863325a78
124018963352
131c4ba4c0aa
141005496db0
158125cc0b5
hex4d1e3682e

20701210670 has 16 divisors (see below), whose sum is σ = 42585347808. Its totient is φ = 7097557920.

The previous prime is 20701210669. The next prime is 20701210723. The reversal of 20701210670 is 7601210702.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147865721 + ... + 147865860.

It is an arithmetic number, because the mean of its divisors is an integer number (2661584238).

Almost surely, 220701210670 is an apocalyptic number.

20701210670 is an abundant number, since it is smaller than the sum of its proper divisors (21884137138).

20701210670 is a wasteful number, since it uses less digits than its factorization.

20701210670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295731595.

The product of its (nonzero) digits is 1176, while the sum is 26.

The spelling of 20701210670 in words is "twenty billion, seven hundred one million, two hundred ten thousand, six hundred seventy".

Divisors: 1 2 5 7 10 14 35 70 295731581 591463162 1478657905 2070121067 2957315810 4140242134 10350605335 20701210670