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29880431 = 741104113
BaseRepresentation
bin111000111111…
…1000001101111
32002020002020122
41301333001233
530122133211
62544235155
7511656650
oct161770157
962202218
1029880431
1115959679
12a00babb
136262739
143d7b527
1529536db
hex1c7f06f

29880431 has 8 divisors (see below), whose sum is σ = 34982304. Its totient is φ = 24986880.

The previous prime is 29880419. The next prime is 29880449. The reversal of 29880431 is 13408892.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 29880431 - 214 = 29864047 is a prime.

It is a super-2 number, since 2×298804312 = 1785680313491522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 29880391 and 29880400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29880451) 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, 51770 + ... + 52343.

It is an arithmetic number, because the mean of its divisors is an integer number (4372788).

Almost surely, 229880431 is an apocalyptic number.

29880431 is a deficient number, since it is larger than the sum of its proper divisors (5101873).

29880431 is a wasteful number, since it uses less digits than its factorization.

29880431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104161.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 29880431 is about 5466.2995710078. The cubic root of 29880431 is about 310.3098912935.

The spelling of 29880431 in words is "twenty-nine million, eight hundred eighty thousand, four hundred thirty-one".

Divisors: 1 7 41 287 104113 728791 4268633 29880431