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72074049 = 3191737309
BaseRepresentation
bin1000100101111…
…00001101000001
312000121202000020
410102330031001
5121422332144
611052444053
71533422265
oct422741501
9160552006
1072074049
1137758333
1220179629
1311c16888
1498020a5
1564da419
hex44bc341

72074049 has 16 divisors (see below), whose sum is σ = 101755200. Its totient is φ = 45251136.

The previous prime is 72074021. The next prime is 72074059. The reversal of 72074049 is 94047027.

It is not a de Polignac number, because 72074049 - 27 = 72073921 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (72074059) 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 15 ways as a sum of consecutive naturals, for example, 6207 + ... + 13515.

It is an arithmetic number, because the mean of its divisors is an integer number (6359700).

Almost surely, 272074049 is an apocalyptic number.

It is an amenable number.

72074049 is a deficient number, since it is larger than the sum of its proper divisors (29681151).

72074049 is a wasteful number, since it uses less digits than its factorization.

72074049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7504.

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 72074049 is about 8489.6436320967. The cubic root of 72074049 is about 416.1593343820.

The spelling of 72074049 in words is "seventy-two million, seventy-four thousand, forty-nine".

Divisors: 1 3 19 57 173 519 3287 7309 9861 21927 138871 416613 1264457 3793371 24024683 72074049