20708409000 has 64 divisors (see below), whose sum is σ = 64610245440. Its totient is φ = 5522241600.

The previous prime is 20708408993. The next prime is 20708409023. The reversal of 20708409000 is 90480702.

It is a super-2 number, since 2×20708409000² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3448402 + ... + 3454401.

It is an arithmetic number, because the mean of its divisors is an integer number (1009535085).

Almost surely, 2^20708409000 is an apocalyptic number.

20708409000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20708409000 is an abundant number, since it is smaller than the sum of its proper divisors (43901836440).

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

20708409000 is a wasteful number, since it uses less digits than its factorization.

20708409000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6902827 (or 6902813 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

Adding to 20708409000 its reverse (90480702), we get a palindrome (20798889702).

The spelling of 20708409000 in words is "twenty billion, seven hundred eight million, four hundred nine thousand".