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75216156 = 2236268013
BaseRepresentation
bin1000111101110…
…11010100011100
312020112101011120
410132323110130
5123223404111
611244050540
71602220041
oct436732434
9166471146
1075216156
1139504014
1221233a50
1312776b02
149dbd1c8
15690b406
hex47bb51c

75216156 has 12 divisors (see below), whose sum is σ = 175504392. Its totient is φ = 25072048.

The previous prime is 75216149. The next prime is 75216157. The reversal of 75216156 is 65161257.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75216157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3133995 + ... + 3134018.

It is an arithmetic number, because the mean of its divisors is an integer number (14625366).

Almost surely, 275216156 is an apocalyptic number.

It is an amenable number.

75216156 is an abundant number, since it is smaller than the sum of its proper divisors (100288236).

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

75216156 is a wasteful number, since it uses less digits than its factorization.

75216156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6268020 (or 6268018 counting only the distinct ones).

The product of its digits is 12600, while the sum is 33.

The square root of 75216156 is about 8672.7248313318. The cubic root of 75216156 is about 422.1210841268.

The spelling of 75216156 in words is "seventy-five million, two hundred sixteen thousand, one hundred fifty-six".