20602188 has 30 divisors (see below), whose sum is σ = 53859036. Its totient is φ = 6867288.

The previous prime is 20602157. The next prime is 20602189. The reversal of 20602188 is 88120602.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 9 ways as a sum of consecutive naturals, for example, 31470 + ... + 32117.

Almost surely, 2^20602188 is an apocalyptic number.

It is an amenable number.

20602188 is an abundant number, since it is smaller than the sum of its proper divisors (33256848).

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

20602188 is a wasteful number, since it uses less digits than its factorization.

20602188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63603 (or 63592 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 20602188 is about 4538.9633177632. The cubic root of 20602188 is about 274.1391837313.

The spelling of 20602188 in words is "twenty million, six hundred two thousand, one hundred eighty-eight".