23620140 has 192 divisors, whose sum is σ = 81285120. Its totient is φ = 5667840.

The previous prime is 23620127. The next prime is 23620153. The reversal of 23620140 is 4102632.

It is a happy number.

23620140 is a `hidden beast` number, since 2 + 3 + 620 + 1 + 40 = 666.

It is an interprime number because it is at equal distance from previous prime (23620127) and next prime (23620153).

It is a super-2 number, since 2×23620140² = 1115822027239200, which contains 22 as substring.

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

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 63 ways as a sum of consecutive naturals, for example, 284539 + ... + 284621.

It is an arithmetic number, because the mean of its divisors is an integer number (423360).

Almost surely, 2^23620140 is an apocalyptic number.

23620140 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 23620140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40642560).

23620140 is an abundant number, since it is smaller than the sum of its proper divisors (57664980).

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

23620140 is a wasteful number, since it uses less digits than its factorization.

23620140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149 (or 141 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 23620140 is about 4860.0555552380. The cubic root of 23620140 is about 286.9200002029.

Adding to 23620140 its reverse (4102632), we get a palindrome (27722772).

The spelling of 23620140 in words is "twenty-three million, six hundred twenty thousand, one hundred forty".