20708004 has 24 divisors (see below), whose sum is σ = 50420160. Its totient is φ = 6602464.

The previous prime is 20707991. The next prime is 20708011. The reversal of 20708004 is 40080702.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37239 + ... + 37790.

It is an arithmetic number, because the mean of its divisors is an integer number (2100840).

Almost surely, 2^20708004 is an apocalyptic number.

It is an amenable number.

20708004 is an abundant number, since it is smaller than the sum of its proper divisors (29712156).

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

20708004 is a wasteful number, since it uses less digits than its factorization.

20708004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75059 (or 75057 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 20708004 is about 4550.6047949696. The cubic root of 20708004 is about 274.6077227910.

Adding to 20708004 its reverse (40080702), we get a palindrome (60788706).

The spelling of 20708004 in words is "twenty million, seven hundred eight thousand, four".