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23118480 = 24335711139
BaseRepresentation
bin101100000110…
…0001010010000
31121111112121000
41120030022100
521404242410
62143302000
7400334550
oct130141220
947445530
1023118480
1112060290
1278aa900
134a35998
1430db160
152069dc0
hex160c290

23118480 has 320 divisors, whose sum is σ = 99993600. Its totient is φ = 4769280.

The previous prime is 23118463. The next prime is 23118499. The reversal of 23118480 is 8481132.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 166251 + ... + 166389.

It is an arithmetic number, because the mean of its divisors is an integer number (312480).

Almost surely, 223118480 is an apocalyptic number.

23118480 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 23118480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49996800).

23118480 is an abundant number, since it is smaller than the sum of its proper divisors (76875120).

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

23118480 is a wasteful number, since it uses less digits than its factorization.

23118480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179 (or 167 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 23118480 is about 4808.1680503077. The cubic root of 23118480 is about 284.8741826915.

The spelling of 23118480 in words is "twenty-three million, one hundred eighteen thousand, four hundred eighty".