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23423021454 = 237279670141
BaseRepresentation
bin10101110100000111…
…101111000110001110
32020110101112202221010
4111310013233012032
5340432243141304
614432124350050
71456305253200
oct256407570616
966411482833
1023423021454
119a2a759778
1246583a5326
132293901211
1411c2b66770
1592151e789
hex5741ef18e

23423021454 has 24 divisors (see below), whose sum is σ = 54494377128. Its totient is φ = 6692291760.

The previous prime is 23423021441. The next prime is 23423021459. The reversal of 23423021454 is 45412032432.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23423021459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39834777 + ... + 39835364.

It is an arithmetic number, because the mean of its divisors is an integer number (2270599047).

Almost surely, 223423021454 is an apocalyptic number.

23423021454 is an abundant number, since it is smaller than the sum of its proper divisors (31071355674).

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

23423021454 is a wasteful number, since it uses less digits than its factorization.

23423021454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79670160 (or 79670153 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 30.

Adding to 23423021454 its reverse (45412032432), we get a palindrome (68835053886).

The spelling of 23423021454 in words is "twenty-three billion, four hundred twenty-three million, twenty-one thousand, four hundred fifty-four".

Divisors: 1 2 3 6 7 14 21 42 49 98 147 294 79670141 159340282 239010423 478020846 557690987 1115381974 1673072961 3346145922 3903836909 7807673818 11711510727 23423021454