20609682 has 16 divisors (see below), whose sum is σ = 41620800. Its totient is φ = 6802992.

The previous prime is 20609653. The next prime is 20609683. The reversal of 20609682 is 28690602.

It is a super-2 number, since 2×20609682² = 849517984282248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20609683) 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 7 ways as a sum of consecutive naturals, for example, 16057 + ... + 17292.

It is an arithmetic number, because the mean of its divisors is an integer number (2601300).

Almost surely, 2^20609682 is an apocalyptic number.

20609682 is an abundant number, since it is smaller than the sum of its proper divisors (21011118).

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

20609682 is a wasteful number, since it uses less digits than its factorization.

20609682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33457.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 20609682 is about 4539.7887616055. The cubic root of 20609682 is about 274.1724188744.

The spelling of 20609682 in words is "twenty million, six hundred nine thousand, six hundred eighty-two".