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20547072 = 29327313
BaseRepresentation
bin100111001100…
…0011000000000
31102122220021200
41032120120000
520230001242
62012221200
7336435000
oct116303000
942586250
1020547072
1110664357
126a6a800
134345440
142a2c000
151c0d04c
hex1398600

20547072 has 240 divisors, whose sum is σ = 74474400. Its totient is φ = 5419008.

The previous prime is 20547053. The next prime is 20547083. The reversal of 20547072 is 27074502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1580538 + ... + 1580550.

It is an arithmetic number, because the mean of its divisors is an integer number (310310).

Almost surely, 220547072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20547072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37237200).

20547072 is an abundant number, since it is smaller than the sum of its proper divisors (53927328).

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

20547072 is an equidigital number, since it uses as much as digits as its factorization.

20547072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58 (or 25 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 27.

The square root of 20547072 is about 4532.8878212460. The cubic root of 20547072 is about 273.8945018045.

The spelling of 20547072 in words is "twenty million, five hundred forty-seven thousand, seventy-two".