23003500 has 48 divisors (see below), whose sum is σ = 54119520. Its totient is φ = 8491200.

The previous prime is 23003459. The next prime is 23003531. The reversal of 23003500 is 530032.

It is a super-2 number, since 2×23003500² = 1058322024500000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4731 + ... + 8269.

It is an arithmetic number, because the mean of its divisors is an integer number (1127490).

Almost surely, 2^23003500 is an apocalyptic number.

23003500 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 23003500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27059760).

23003500 is an abundant number, since it is smaller than the sum of its proper divisors (31116020).

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

23003500 is a wasteful number, since it uses less digits than its factorization.

23003500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3571 (or 3559 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 13.

The square root of 23003500 is about 4796.1964096563. The cubic root of 23003500 is about 284.4011226657.

Adding to 23003500 its reverse (530032), we get a palindrome (23533532).

The spelling of 23003500 in words is "twenty-three million, three thousand, five hundred".