20652403 has 2 divisors, whose sum is σ = 20652404. Its totient is φ = 20652402.

The previous prime is 20652383. The next prime is 20652407. The reversal of 20652403 is 30425602.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20652403 - 2¹⁷ = 20521331 is a prime.

It is not a weakly prime, because it can be changed into another prime (20652407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10326201 + 10326202.

It is an arithmetic number, because the mean of its divisors is an integer number (10326202).

Almost surely, 2^20652403 is an apocalyptic number.

20652403 is a deficient number, since it is larger than the sum of its proper divisors (1).

20652403 is an equidigital number, since it uses as much as digits as its factorization.

20652403 is an odious number, because the sum of its binary digits is odd.

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

The square root of 20652403 is about 4544.4915007072. The cubic root of 20652403 is about 274.3617285417.

The spelling of 20652403 in words is "twenty million, six hundred fifty-two thousand, four hundred three".