20642088 has 16 divisors (see below), whose sum is σ = 51605280. Its totient is φ = 6880688.

The previous prime is 20642059. The next prime is 20642099. The reversal of 20642088 is 88024602.

It is a happy number.

It is an unprimeable number.

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, 430020 + ... + 430067.

It is an arithmetic number, because the mean of its divisors is an integer number (3225330).

Almost surely, 2^20642088 is an apocalyptic number.

It is an amenable number.

20642088 is an abundant number, since it is smaller than the sum of its proper divisors (30963192).

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

20642088 is a wasteful number, since it uses less digits than its factorization.

20642088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 860096 (or 860092 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 20642088 is about 4543.3564685153. The cubic root of 20642088 is about 274.3160435832.

The spelling of 20642088 in words is "twenty million, six hundred forty-two thousand, eighty-eight".