23243490 has 64 divisors (see below), whose sum is σ = 64005120. Its totient is φ = 5996160.

The previous prime is 23243489. The next prime is 23243497. The reversal of 23243490 is 9434232.

It is a happy number.

It is a super-3 number, since 3×23243490³ (a number of 23 digits) contains 333 as substring.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23243497) 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, 6982 + ... + 9758.

It is an arithmetic number, because the mean of its divisors is an integer number (1000080).

Almost surely, 2^23243490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23243490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32002560).

23243490 is an abundant number, since it is smaller than the sum of its proper divisors (40761630).

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

23243490 is a wasteful number, since it uses less digits than its factorization.

23243490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2824 (or 2818 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 23243490 is about 4821.1502776827. The cubic root of 23243490 is about 285.3867326010.

The spelling of 23243490 in words is "twenty-three million, two hundred forty-three thousand, four hundred ninety".