23605420 has 24 divisors (see below), whose sum is σ = 51282000. Its totient is φ = 9116352.

The previous prime is 23605399. The next prime is 23605423. The reversal of 23605420 is 2450632.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 23605391 and 23605400.

It is not an unprimeable number, because it can be changed into a prime (23605423) 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, 19770 + ... + 20929.

It is an arithmetic number, because the mean of its divisors is an integer number (2136750).

Almost surely, 2^23605420 is an apocalyptic number.

23605420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23605420 is an abundant number, since it is smaller than the sum of its proper divisors (27676580).

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

23605420 is a wasteful number, since it uses less digits than its factorization.

23605420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40737 (or 40735 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 23605420 is about 4858.5409332432. The cubic root of 23605420 is about 286.8603852577.

It can be divided in two parts, 23605 and 420, that added together give a square (24025 = 155²).

The spelling of 23605420 in words is "twenty-three million, six hundred five thousand, four hundred twenty".