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23210460 = 223257132109
BaseRepresentation
bin101100010001…
…0100111011100
31121200012202200
41120202213130
521420213320
62145251500
7401166660
oct130424734
947605680
1023210460
11121133a9
127933b90
134a68800
1431228a0
152087290
hex16229dc

23210460 has 216 divisors, whose sum is σ = 87927840. Its totient is φ = 4852224.

The previous prime is 23210459. The next prime is 23210461. The reversal of 23210460 is 6401232.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (23210459) and next prime (23210461).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23210461) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 212886 + ... + 212994.

Almost surely, 223210460 is an apocalyptic number.

23210460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23210460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43963920).

23210460 is an abundant number, since it is smaller than the sum of its proper divisors (64717380).

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

23210460 is a wasteful number, since it uses less digits than its factorization.

23210460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157 (or 139 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 23210460 is about 4817.7235288049. The cubic root of 23210460 is about 285.2514862392.

Adding to 23210460 its reverse (6401232), we get a palindrome (29611692).

The spelling of 23210460 in words is "twenty-three million, two hundred ten thousand, four hundred sixty".