20602149 has 4 divisors (see below), whose sum is σ = 27469536. Its totient is φ = 13734764.

The previous prime is 20602123. The next prime is 20602157. The reversal of 20602149 is 94120602.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20602149 - 2¹¹ = 20600101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20602189) 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 in 3 ways as a sum of consecutive naturals, for example, 3433689 + ... + 3433694.

It is an arithmetic number, because the mean of its divisors is an integer number (6867384).

Almost surely, 2^20602149 is an apocalyptic number.

It is an amenable number.

20602149 is a deficient number, since it is larger than the sum of its proper divisors (6867387).

20602149 is an equidigital number, since it uses as much as digits as its factorization.

20602149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6867386.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 20602149 is about 4538.9590216260. The cubic root of 20602149 is about 274.1390107491.

The spelling of 20602149 in words is "twenty million, six hundred two thousand, one hundred forty-nine".