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20375029 = 312812339
BaseRepresentation
bin100110110111…
…0010111110101
31102100011021201
41031232113311
520204000104
62004412501
7335120263
oct115562765
942304251
1020375029
1110557074
1269a7131
1342b503c
1429c5433
151bc70a4
hex136e5f5

20375029 has 8 divisors (see below), whose sum is σ = 21116160. Its totient is φ = 19639200.

The previous prime is 20375009. The next prime is 20375039. The reversal of 20375029 is 92057302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20375029 - 25 = 20374997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20374988 and 20375006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20375009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7542 + ... + 9880.

It is an arithmetic number, because the mean of its divisors is an integer number (2639520).

Almost surely, 220375029 is an apocalyptic number.

It is an amenable number.

20375029 is a deficient number, since it is larger than the sum of its proper divisors (741131).

20375029 is a wasteful number, since it uses less digits than its factorization.

20375029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2651.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 20375029 is about 4513.8707336387. The cubic root of 20375029 is about 273.1279081461.

The spelling of 20375029 in words is "twenty million, three hundred seventy-five thousand, twenty-nine".

Divisors: 1 31 281 2339 8711 72509 657259 20375029