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30772001020 = 2251538600051
BaseRepresentation
bin11100101010001001…
…110111100011111100
32221102112221121200111
4130222021313203330
51001010113013040
622045250435404
72136362456455
oct345211674374
987375847614
1030772001020
1112060aa0902
125b69592b64
132b952c3a37
1416bcba612c
15c017bedea
hex72a2778fc

30772001020 has 12 divisors (see below), whose sum is σ = 64621202184. Its totient is φ = 12308800400.

The previous prime is 30772000967. The next prime is 30772001021. The reversal of 30772001020 is 2010027703.

It is a junction number, because it is equal to n+sod(n) for n = 30772000982 and 30772001000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30772001021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 769300006 + ... + 769300045.

It is an arithmetic number, because the mean of its divisors is an integer number (5385100182).

Almost surely, 230772001020 is an apocalyptic number.

It is an amenable number.

30772001020 is an abundant number, since it is smaller than the sum of its proper divisors (33849201164).

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

30772001020 is a wasteful number, since it uses less digits than its factorization.

30772001020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1538600060 (or 1538600058 counting only the distinct ones).

The product of its (nonzero) digits is 588, while the sum is 22.

Adding to 30772001020 its reverse (2010027703), we get a palindrome (32782028723).

The spelling of 30772001020 in words is "thirty billion, seven hundred seventy-two million, one thousand, twenty".

Divisors: 1 2 4 5 10 20 1538600051 3077200102 6154400204 7693000255 15386000510 30772001020