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29895420 = 2235498257
BaseRepresentation
bin111001000001…
…0101011111100
32002020211210210
41302002223330
530123123140
62544432420
7512051442
oct162025374
962224723
1029895420
1115969965
12a018710
1362694c9
143d82b92
152957d80
hex1c82afc

29895420 has 24 divisors (see below), whose sum is σ = 83707344. Its totient is φ = 7972096.

The previous prime is 29895413. The next prime is 29895421. The reversal of 29895420 is 2459892.

It is a super-2 number, since 2×298954202 = 1787472273952800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29895421) 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 7 ways as a sum of consecutive naturals, for example, 249069 + ... + 249188.

It is an arithmetic number, because the mean of its divisors is an integer number (3487806).

Almost surely, 229895420 is an apocalyptic number.

29895420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29895420 is an abundant number, since it is smaller than the sum of its proper divisors (53811924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

29895420 is a wasteful number, since it uses less digits than its factorization.

29895420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498269 (or 498267 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 29895420 is about 5467.6704363010. The cubic root of 29895420 is about 310.3617698116.

Subtracting from 29895420 its reverse (2459892), we obtain a triangular number (27435528 = T7407).

The spelling of 29895420 in words is "twenty-nine million, eight hundred ninety-five thousand, four hundred twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 498257 996514 1494771 1993028 2491285 2989542 4982570 5979084 7473855 9965140 14947710 29895420