20308379000 has 512 divisors, whose sum is σ = 63201116160. Its totient is φ = 5930496000.

The previous prime is 20308378957. The next prime is 20308379011. The reversal of 20308379000 is 97380302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 64882844 + ... + 64883156.

It is an arithmetic number, because the mean of its divisors is an integer number (123439680).

Almost surely, 2^20308379000 is an apocalyptic number.

20308379000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20308379000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31600558080).

20308379000 is an abundant number, since it is smaller than the sum of its proper divisors (42892737160).

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

20308379000 is a wasteful number, since it uses less digits than its factorization.

20308379000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408 (or 394 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 32.

The spelling of 20308379000 in words is "twenty billion, three hundred eight million, three hundred seventy-nine thousand".