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29748769 = 103288823
BaseRepresentation
bin111000101111…
…0111000100001
32001222101122021
41301132320201
530103430034
62541341441
7510601051
oct161367041
961871567
1029748769
1115879766
129b67881
13621782b
143d45561
1529296b4
hex1c5ee21

29748769 has 4 divisors (see below), whose sum is σ = 30037696. Its totient is φ = 29459844.

The previous prime is 29748767. The next prime is 29748781. The reversal of 29748769 is 96784792.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 29748769 - 21 = 29748767 is a prime.

It is a super-2 number, since 2×297487692 = 1769978514030722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29748767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144309 + ... + 144514.

It is an arithmetic number, because the mean of its divisors is an integer number (7509424).

Almost surely, 229748769 is an apocalyptic number.

It is an amenable number.

29748769 is a deficient number, since it is larger than the sum of its proper divisors (288927).

29748769 is a wasteful number, since it uses less digits than its factorization.

29748769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288926.

The product of its digits is 1524096, while the sum is 52.

The square root of 29748769 is about 5454.2432105655. The cubic root of 29748769 is about 309.8534478982.

The spelling of 29748769 in words is "twenty-nine million, seven hundred forty-eight thousand, seven hundred sixty-nine".

Divisors: 1 103 288823 29748769