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23454460 = 2254128603
BaseRepresentation
bin101100101111…
…0001011111100
31122010121110201
41121132023330
522001020320
62154413244
7403234231
oct131361374
948117421
1023454460
111226a757
127a31224
134b228a3
143187788
1520d470a
hex165e2fc

23454460 has 24 divisors (see below), whose sum is σ = 50457456. Its totient is φ = 9152640.

The previous prime is 23454449. The next prime is 23454467. The reversal of 23454460 is 6445432.

It is a super-2 number, since 2×234544602 = 1100223387783200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23454467) 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, 13482 + ... + 15121.

It is an arithmetic number, because the mean of its divisors is an integer number (2102394).

Almost surely, 223454460 is an apocalyptic number.

23454460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23454460 is an abundant number, since it is smaller than the sum of its proper divisors (27002996).

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

23454460 is a wasteful number, since it uses less digits than its factorization.

23454460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28653 (or 28651 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 23454460 is about 4842.9804872620. The cubic root of 23454460 is about 286.2475728073.

Adding to 23454460 its reverse (6445432), we get a palindrome (29899892).

Subtracting from 23454460 its reverse (6445432), we obtain a triangular number (17009028 = T5832).

The spelling of 23454460 in words is "twenty-three million, four hundred fifty-four thousand, four hundred sixty".

Divisors: 1 2 4 5 10 20 41 82 164 205 410 820 28603 57206 114412 143015 286030 572060 1172723 2345446 4690892 5863615 11727230 23454460