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20020219974 = 2327914078917
BaseRepresentation
bin10010101001010011…
…000101000001000110
31220200020120112211200
4102221103011001012
5312000134014344
613110330443330
71306056030156
oct225123050106
956606515750
1020020219974
11854398a647
123a68893546
131b70937211
14d7cc6a766
157c2912069
hex4a94c5046

20020219974 has 24 divisors (see below), whose sum is σ = 43926224160. Its totient is φ = 6588932688.

The previous prime is 20020219931. The next prime is 20020220023. The reversal of 20020219974 is 47991202002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7038037 + ... + 7040880.

It is an arithmetic number, because the mean of its divisors is an integer number (1830259340).

Almost surely, 220020219974 is an apocalyptic number.

20020219974 is an abundant number, since it is smaller than the sum of its proper divisors (23906004186).

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

20020219974 is a wasteful number, since it uses less digits than its factorization.

20020219974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14079004 (or 14079001 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The spelling of 20020219974 in words is "twenty billion, twenty million, two hundred nineteen thousand, nine hundred seventy-four".

Divisors: 1 2 3 6 9 18 79 158 237 474 711 1422 14078917 28157834 42236751 84473502 126710253 253420506 1112234443 2224468886 3336703329 6673406658 10010109987 20020219974