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30030020020 = 225711135572693
BaseRepresentation
bin11011111101111011…
…011011110110110100
32212111211210002002201
4123331323123312310
5443000141120040
621443503314244
72112112646530
oct337573336664
985454702081
1030030020020
1111810188570
1259a0bab984
132aa7676220
14164c420bc0
15bab5a8a9a
hex6fdedbdb4

30030020020 has 192 divisors, whose sum is σ = 84855568896. Its totient is φ = 8621291520.

The previous prime is 30030020017. The next prime is 30030020021. The reversal of 30030020020 is 2002003003.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 30030019979 and 30030020006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30030020021) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11149794 + ... + 11152486.

It is an arithmetic number, because the mean of its divisors is an integer number (441956088).

Almost surely, 230030020020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30030020020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42427784448).

30030020020 is an abundant number, since it is smaller than the sum of its proper divisors (54825548876).

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

30030020020 is a wasteful number, since it uses less digits than its factorization.

30030020020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3290 (or 3288 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 10.

Adding to 30030020020 its reverse (2002003003), we get a palindrome (32032023023).

The spelling of 30030020020 in words is "thirty billion, thirty million, twenty thousand, twenty".