23150020 has 24 divisors (see below), whose sum is σ = 49120344. Its totient is φ = 9163776.

The previous prime is 23150009. The next prime is 23150021. The reversal of 23150020 is 2005132.

It can be written as a sum of positive squares in 4 ways, for example, as 5053504 + 18096516 = 2248^2 + 4254^2 .

It is a super-3 number, since 3×23150020³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (23150021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4027 + ... + 7906.

It is an arithmetic number, because the mean of its divisors is an integer number (2046681).

Almost surely, 2^23150020 is an apocalyptic number.

23150020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23150020 is an abundant number, since it is smaller than the sum of its proper divisors (25970324).

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

23150020 is a wasteful number, since it uses less digits than its factorization.

23150020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12039 (or 12037 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 23150020 is about 4811.4467678652. The cubic root of 23150020 is about 285.0036728777.

Adding to 23150020 its reverse (2005132), we get a palindrome (25155152).

The spelling of 23150020 in words is "twenty-three million, one hundred fifty thousand, twenty".