Search a number
-
+
30470704776757 = 721011136150061
BaseRepresentation
bin1101110110110100000111…
…00010001100011000110101
310222212222012210202221022101
412323122003202030120311
512443213000410324012
6144450014252102101
76263302320104500
oct673320342143065
9128788183687271
1030470704776757
11978860a527753
123501515464931
1314004b52175ab
14774b0b9c4137
1537c92daead57
hex1bb68388c635

30470704776757 has 12 divisors (see below), whose sum is σ = 35445870036876. Its totient is φ = 26117484402240.

The previous prime is 30470704776737. The next prime is 30470704776763. The reversal of 30470704776757 is 75767740707403.

It can be written as a sum of positive squares in 2 ways, for example, as 464784426001 + 30005920350756 = 681751^2 + 5477766^2 .

It is not a de Polignac number, because 30470704776757 - 227 = 30470570559029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30470704776737) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1879507 + ... + 8029567.

It is an arithmetic number, because the mean of its divisors is an integer number (2953822503073).

Almost surely, 230470704776757 is an apocalyptic number.

It is an amenable number.

30470704776757 is a deficient number, since it is larger than the sum of its proper divisors (4975165260119).

30470704776757 is a wasteful number, since it uses less digits than its factorization.

30470704776757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6251188 (or 6251181 counting only the distinct ones).

The product of its (nonzero) digits is 169414560, while the sum is 64.

The spelling of 30470704776757 in words is "thirty trillion, four hundred seventy billion, seven hundred four million, seven hundred seventy-six thousand, seven hundred fifty-seven".

Divisors: 1 7 49 101113 707791 4954537 6150061 43050427 301352989 621851117893 4352957825251 30470704776757