23140020 has 48 divisors (see below), whose sum is σ = 66306240. Its totient is φ = 6026496.

The previous prime is 23140003. The next prime is 23140037. The reversal of 23140020 is 2004132.

It is an interprime number because it is at equal distance from previous prime (23140003) and next prime (23140037).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 23139978 and 23140005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1905 + ... + 7064.

It is an arithmetic number, because the mean of its divisors is an integer number (1381380).

Almost surely, 2^23140020 is an apocalyptic number.

23140020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23140020 is an abundant number, since it is smaller than the sum of its proper divisors (43166220).

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

23140020 is a wasteful number, since it uses less digits than its factorization.

23140020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9024 (or 9022 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 23140020 is about 4810.4074671487. The cubic root of 23140020 is about 284.9626297569.

Adding to 23140020 its reverse (2004132), we get a palindrome (25144152).

The spelling of 23140020 in words is "twenty-three million, one hundred forty thousand, twenty".