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20672174054 = 278317790167
BaseRepresentation
bin10011010000001010…
…000101011111100110
31222100200100020201002
4103100022011133212
5314314034032204
613255140233302
71331163403010
oct232012053746
958320306632
1020672174054
1188489a3374
12400b09b832
131c45a2376c
1410016991b0
1580ec9391e
hex4d02857e6

20672174054 has 16 divisors (see below), whose sum is σ = 35864978688. Its totient is φ = 8752761672.

The previous prime is 20672173987. The next prime is 20672174069. The reversal of 20672174054 is 45047127602.

It is a junction number, because it is equal to n+sod(n) for n = 20672173999 and 20672174017.

It is a congruent number.

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, 8893922 + ... + 8896245.

It is an arithmetic number, because the mean of its divisors is an integer number (2241561168).

Almost surely, 220672174054 is an apocalyptic number.

20672174054 is a deficient number, since it is larger than the sum of its proper divisors (15192804634).

20672174054 is a wasteful number, since it uses less digits than its factorization.

20672174054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17790259.

The product of its (nonzero) digits is 94080, while the sum is 38.

The spelling of 20672174054 in words is "twenty billion, six hundred seventy-two million, one hundred seventy-four thousand, fifty-four".

Divisors: 1 2 7 14 83 166 581 1162 17790167 35580334 124531169 249062338 1476583861 2953167722 10336087027 20672174054