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30801228861 = 313789775099
BaseRepresentation
bin11100101011111001…
…010111010000111101
32221111120221112202010
4130223321113100331
51001040103310421
622052213121433
72140166061024
oct345371272075
987446845663
1030801228861
1112076544147
125b77329279
132b9b388410
1416c2a138bb
15c04145076
hex72be5743d

30801228861 has 8 divisors (see below), whose sum is σ = 44227405600. Its totient is φ = 18954602352.

The previous prime is 30801228853. The next prime is 30801228901. The reversal of 30801228861 is 16882210803.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30801228861 - 23 = 30801228853 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 789775099 = 30801228861 / (3 + 0 + 8 + 0 + 1 + 2 + 2 + 8 + 8 + 6 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30801228851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 394887511 + ... + 394887588.

It is an arithmetic number, because the mean of its divisors is an integer number (5528425700).

Almost surely, 230801228861 is an apocalyptic number.

It is an amenable number.

30801228861 is a deficient number, since it is larger than the sum of its proper divisors (13426176739).

30801228861 is a wasteful number, since it uses less digits than its factorization.

30801228861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 789775115.

The product of its (nonzero) digits is 36864, while the sum is 39.

The spelling of 30801228861 in words is "thirty billion, eight hundred one million, two hundred twenty-eight thousand, eight hundred sixty-one".

Divisors: 1 3 13 39 789775099 2369325297 10267076287 30801228861