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20824468 = 227743731
BaseRepresentation
bin100111101110…
…0000110010100
31110011222210121
41033130012110
520312340333
62022201324
7342001510
oct117340624
943158717
1020824468
1110833805
126b83244
134411792
142aa1140
151c6532d
hex13dc194

20824468 has 12 divisors (see below), whose sum is σ = 41648992. Its totient is φ = 8924760.

The previous prime is 20824459. The next prime is 20824477. The reversal of 20824468 is 86442802.

It is an interprime number because it is at equal distance from previous prime (20824459) and next prime (20824477).

20824468 is an admirable number.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 371838 + ... + 371893.

Almost surely, 220824468 is an apocalyptic number.

20824468 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20824468 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20824468 is a wasteful number, since it uses less digits than its factorization.

20824468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743742 (or 743740 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 34.

The square root of 20824468 is about 4563.3833939304. The cubic root of 20824468 is about 275.1215682894.

The spelling of 20824468 in words is "twenty million, eight hundred twenty-four thousand, four hundred sixty-eight".

Divisors: 1 2 4 7 14 28 743731 1487462 2974924 5206117 10412234 20824468