23906280 has 128 divisors (see below), whose sum is σ = 75841920. Its totient is φ = 6021120.

The previous prime is 23906279. The next prime is 23906287. The reversal of 23906280 is 8260932.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (23906287) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 211504 + ... + 211616.

It is an arithmetic number, because the mean of its divisors is an integer number (592515).

Almost surely, 2^23906280 is an apocalyptic number.

23906280 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 23906280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37920960).

23906280 is an abundant number, since it is smaller than the sum of its proper divisors (51935640).

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

23906280 is a wasteful number, since it uses less digits than its factorization.

23906280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211 (or 207 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 23906280 is about 4889.4048717610. The cubic root of 23906280 is about 288.0739586292.

The spelling of 23906280 in words is "twenty-three million, nine hundred six thousand, two hundred eighty".