23250420 has 36 divisors (see below), whose sum is σ = 70526820. Its totient is φ = 6200064.

The previous prime is 23250419. The next prime is 23250421. The reversal of 23250420 is 2405232.

It is an interprime number because it is at equal distance from previous prime (23250419) and next prime (23250421).

It can be written as a sum of positive squares in 2 ways, for example, as 4691556 + 18558864 = 2166^2 + 4308^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 23250393 and 23250402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23250421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64405 + ... + 64764.

Almost surely, 2^23250420 is an apocalyptic number.

23250420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23250420 is an abundant number, since it is smaller than the sum of its proper divisors (47276400).

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

23250420 is a wasteful number, since it uses less digits than its factorization.

23250420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129184 (or 129179 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 23250420 is about 4821.8689322710. The cubic root of 23250420 is about 285.4150922771.

Adding to 23250420 its reverse (2405232), we get a palindrome (25655652).

The spelling of 23250420 in words is "twenty-three million, two hundred fifty thousand, four hundred twenty".