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29807141 = 721373641
BaseRepresentation
bin111000110110…
…1001000100101
32002002100201012
41301231020211
530112312031
62542512005
7511233200
oct161551045
962070635
1029807141
1115909601
129b95605
136238280
143d5c937
15293bb2b
hex1c6d225

29807141 has 24 divisors (see below), whose sum is σ = 37911384. Its totient is φ = 23224320.

The previous prime is 29807119. The next prime is 29807159. The reversal of 29807141 is 14170892.

It can be written as a sum of positive squares in 4 ways, for example, as 6002500 + 23804641 = 2450^2 + 4879^2 .

It is not a de Polignac number, because 29807141 - 26 = 29807077 is a prime.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 29807098 and 29807107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29807191) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46181 + ... + 46821.

It is an arithmetic number, because the mean of its divisors is an integer number (1579641).

Almost surely, 229807141 is an apocalyptic number.

It is an amenable number.

29807141 is a deficient number, since it is larger than the sum of its proper divisors (8104243).

29807141 is a wasteful number, since it uses less digits than its factorization.

29807141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741 (or 734 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 29807141 is about 5459.5916513967. The cubic root of 29807141 is about 310.0559767110.

The spelling of 29807141 in words is "twenty-nine million, eight hundred seven thousand, one hundred forty-one".

Divisors: 1 7 13 49 73 91 511 637 641 949 3577 4487 6643 8333 31409 46501 46793 58331 327551 408317 608309 2292857 4258163 29807141