23102490 has 64 divisors (see below), whose sum is σ = 59439744. Its totient is φ = 5726208.
The previous prime is 23102489. The next prime is 23102509. The reversal of 23102490 is 9420132.
It is a Curzon number.
It is an unprimeable number.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49237 + ... + 49703.
It is an arithmetic number, because the mean of its divisors is an integer number (928746).
Almost surely, 223102490 is an apocalyptic number.
It is a practical number, because each smaller number is the sum of distinct divisors of 23102490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29719872).
23102490 is an abundant number, since it is smaller than the sum of its proper divisors (36337254).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
23102490 is a wasteful number, since it uses less digits than its factorization.
23102490 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 591.
The product of its (nonzero) digits is 432, while the sum is 21.
The square root of 23102490 is about 4806.5049672293. The cubic root of 23102490 is about 284.8084893763.
The spelling of 23102490 in words is "twenty-three million, one hundred two thousand, four hundred ninety".
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