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29987468 = 2271070981
BaseRepresentation
bin111001001100…
…1001010001100
32002102112001222
41302121022030
530134044333
62550422512
7512614010
oct162311214
962375058
1029987468
1115a22035
12a061a38
13629c384
143da8540
152975298
hex1c9928c

29987468 has 12 divisors (see below), whose sum is σ = 59974992. Its totient is φ = 12851760.

The previous prime is 29987467. The next prime is 29987483. The reversal of 29987468 is 86478992.

29987468 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (29987467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 535463 + ... + 535518.

It is an arithmetic number, because the mean of its divisors is an integer number (4997916).

Almost surely, 229987468 is an apocalyptic number.

29987468 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

29987468 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

29987468 is a wasteful number, since it uses less digits than its factorization.

29987468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070992 (or 1070990 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 53.

The square root of 29987468 is about 5476.0814457055. The cubic root of 29987468 is about 310.6799780830.

The spelling of 29987468 in words is "twenty-nine million, nine hundred eighty-seven thousand, four hundred sixty-eight".

Divisors: 1 2 4 7 14 28 1070981 2141962 4283924 7496867 14993734 29987468