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29998079 = 47787811
BaseRepresentation
bin111001001101…
…1101111111111
32002110001121222
41302123233333
530134414304
62550543555
7512656646
oct162335777
962401558
1029998079
1115a2a001
12a067bbb
1362a4157
143dac35d
1529784be
hex1c9bbff

29998079 has 8 divisors (see below), whose sum is σ = 30713088. Its totient is φ = 29286360.

The previous prime is 29998069. The next prime is 29998099. The reversal of 29998079 is 97089992.

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 29998079 - 24 = 29998063 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 29998079.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29998069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36584 + ... + 37394.

It is an arithmetic number, because the mean of its divisors is an integer number (3839136).

Almost surely, 229998079 is an apocalyptic number.

29998079 is a deficient number, since it is larger than the sum of its proper divisors (715009).

29998079 is an equidigital number, since it uses as much as digits as its factorization.

29998079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1645.

The product of its (nonzero) digits is 734832, while the sum is 53.

The square root of 29998079 is about 5477.0502097388. The cubic root of 29998079 is about 310.7166182387.

The spelling of 29998079 in words is "twenty-nine million, nine hundred ninety-eight thousand, seventy-nine".

Divisors: 1 47 787 811 36989 38117 638257 29998079