20385562 has 8 divisors (see below), whose sum is σ = 31096800. Its totient is φ = 10019964.

The previous prime is 20385559. The next prime is 20385571. The reversal of 20385562 is 26558302.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×20385562² = 831142276111688, which contains 22 as substring.

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, 86262 + ... + 86497.

It is an arithmetic number, because the mean of its divisors is an integer number (3887100).

Almost surely, 2^20385562 is an apocalyptic number.

20385562 is a deficient number, since it is larger than the sum of its proper divisors (10711238).

20385562 is a wasteful number, since it uses less digits than its factorization.

20385562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172820.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 20385562 is about 4515.0373198901. The cubic root of 20385562 is about 273.1749651043.

The spelling of 20385562 in words is "twenty million, three hundred eighty-five thousand, five hundred sixty-two".