23420655 has 48 divisors (see below), whose sum is σ = 42571776. Its totient is φ = 11897280.

The previous prime is 23420653. The next prime is 23420669. The reversal of 23420655 is 55602432.

23420655 is a `hidden beast` number, since 2 + 3 + 4 + 2 + 0 + 655 = 666.

It is not a de Polignac number, because 23420655 - 2¹ = 23420653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23420653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 143604 + ... + 143766.

It is an arithmetic number, because the mean of its divisors is an integer number (886912).

Almost surely, 2^23420655 is an apocalyptic number.

23420655 is a deficient number, since it is larger than the sum of its proper divisors (19151121).

23420655 is a wasteful number, since it uses less digits than its factorization.

23420655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308 (or 305 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 23420655 is about 4839.4891259305. The cubic root of 23420655 is about 286.1099834547.

The spelling of 23420655 in words is "twenty-three million, four hundred twenty thousand, six hundred fifty-five".