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28214000 = 245314107
BaseRepresentation
bin110101110100…
…0001011110000
31222002102022222
41223220023300
524210322000
62444420212
7461546363
oct153501360
958072288
1028214000
1114a20661
129547668
135acb099
143a660da
152724a85
hex1ae82f0

28214000 has 40 divisors (see below), whose sum is σ = 68226288. Its totient is φ = 11284800.

The previous prime is 28213987. The next prime is 28214009. The reversal of 28214000 is 41282.

28214000 = T185 + T186 + ... + T559.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 28214000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28214009) 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, 5054 + ... + 9053.

Almost surely, 228214000 is an apocalyptic number.

28214000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28214000 is an abundant number, since it is smaller than the sum of its proper divisors (40012288).

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

28214000 is a wasteful number, since it uses less digits than its factorization.

28214000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14130 (or 14114 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 28214000 is about 5311.6852316379. The cubic root of 28214000 is about 304.4305418475.

Adding to 28214000 its reverse (41282), we get a palindrome (28255282).

The spelling of 28214000 in words is "twenty-eight million, two hundred fourteen thousand".

Divisors: 1 2 4 5 8 10 16 20 25 40 50 80 100 125 200 250 400 500 1000 2000 14107 28214 56428 70535 112856 141070 225712 282140 352675 564280 705350 1128560 1410700 1763375 2821400 3526750 5642800 7053500 14107000 28214000