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29007381 = 313743779
BaseRepresentation
bin110111010100…
…1111000010101
32000120201122110
41232221320111
524411214011
62513421233
7501362424
oct156517025
960521573
1029007381
1115412747
12986a819
136018240
143bd12bb
15282eba6
hex1ba9e15

29007381 has 8 divisors (see below), whose sum is σ = 41651680. Its totient is φ = 17850672.

The previous prime is 29007367. The next prime is 29007383. The reversal of 29007381 is 18370092.

It is a happy number.

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

It is not a de Polignac number, because 29007381 - 210 = 29006357 is a prime.

It is a super-2 number, since 2×290073812 = 1682856304958322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29007383) 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, 371851 + ... + 371928.

It is an arithmetic number, because the mean of its divisors is an integer number (5206460).

Almost surely, 229007381 is an apocalyptic number.

It is an amenable number.

29007381 is a deficient number, since it is larger than the sum of its proper divisors (12644299).

29007381 is a wasteful number, since it uses less digits than its factorization.

29007381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743795.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 29007381 is about 5385.8500721799. The cubic root of 29007381 is about 307.2577456110.

The spelling of 29007381 in words is "twenty-nine million, seven thousand, three hundred eighty-one".

Divisors: 1 3 13 39 743779 2231337 9669127 29007381