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24280000681 = 88672738243
BaseRepresentation
bin10110100111001100…
…110110100010101001
32022200010002211102111
4112213030312202221
5344211140010211
615053140402321
71516452412666
oct264714664251
968603084374
1024280000681
11a32a477972
1248573a63a1
13239c314111
1412648c4a6d
1597189e421
hex5a73368a9

24280000681 has 4 divisors (see below), whose sum is σ = 24282747792. Its totient is φ = 24277253572.

The previous prime is 24280000663. The next prime is 24280000741. The reversal of 24280000681 is 18600008242.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18600008242 = 29300004121.

It is a cyclic number.

It is not a de Polignac number, because 24280000681 - 29 = 24280000169 is a prime.

It is a super-2 number, since 2×242800006812 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (24280000651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1360255 + ... + 1377988.

It is an arithmetic number, because the mean of its divisors is an integer number (6070686948).

Almost surely, 224280000681 is an apocalyptic number.

It is an amenable number.

24280000681 is a deficient number, since it is larger than the sum of its proper divisors (2747111).

24280000681 is an equidigital number, since it uses as much as digits as its factorization.

24280000681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2747110.

The product of its (nonzero) digits is 6144, while the sum is 31.

The spelling of 24280000681 in words is "twenty-four billion, two hundred eighty million, six hundred eighty-one", and thus it is an aban number.

Divisors: 1 8867 2738243 24280000681