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20895060 = 22351918329
BaseRepresentation
bin100111110110…
…1010101010100
31110022120122010
41033231111110
520322120220
62023504220
7342414354
oct117552524
943276563
1020895060
111088184a
126bb8070
134437954
142abcb64
151c7b1e0
hex13ed554

20895060 has 48 divisors (see below), whose sum is σ = 61588800. Its totient is φ = 5278464.

The previous prime is 20895029. The next prime is 20895071. The reversal of 20895060 is 6059802.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8025 + ... + 10304.

It is an arithmetic number, because the mean of its divisors is an integer number (1283100).

Almost surely, 220895060 is an apocalyptic number.

20895060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20895060 is an abundant number, since it is smaller than the sum of its proper divisors (40693740).

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

20895060 is a wasteful number, since it uses less digits than its factorization.

20895060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18360 (or 18358 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 20895060 is about 4571.1114622157. Note that the first 3 decimals coincide. The cubic root of 20895060 is about 275.4320920722.

The spelling of 20895060 in words is "twenty million, eight hundred ninety-five thousand, sixty".

Divisors: 1 2 3 4 5 6 10 12 15 19 20 30 38 57 60 76 95 114 190 228 285 380 570 1140 18329 36658 54987 73316 91645 109974 183290 219948 274935 348251 366580 549870 696502 1044753 1099740 1393004 1741255 2089506 3482510 4179012 5223765 6965020 10447530 20895060