23042500 has 60 divisors (see below), whose sum is σ = 54341980. Its totient is φ = 8496000.

The previous prime is 23042479. The next prime is 23042561. The reversal of 23042500 is 524032.

It can be written as a sum of positive squares in 10 ways, for example, as 22810176 + 232324 = 4776^2 + 482^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 32146 + ... + 32854.

Almost surely, 2^23042500 is an apocalyptic number.

23042500 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 23042500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27170990).

23042500 is an abundant number, since it is smaller than the sum of its proper divisors (31299480).

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

23042500 is a wasteful number, since it uses less digits than its factorization.

23042500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746 (or 729 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 23042500 is about 4800.2604096028. The cubic root of 23042500 is about 284.5617559236.

Adding to 23042500 its reverse (524032), we get a palindrome (23566532).

It can be divided in two parts, 2304 and 2500, that multiplied together give a square (5760000 = 2400²).

The spelling of 23042500 in words is "twenty-three million, forty-two thousand, five hundred".