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75104731 = 1347122921
BaseRepresentation
bin1000111101000…
…00000111011011
312020022201022201
410132200013123
5123211322411
611241431031
71601244142
oct436400733
9166281281
1075104731
1139438329
122119b477
1312738190
149d90759
1568d83c1
hex47a01db

75104731 has 8 divisors (see below), whose sum is σ = 82603584. Its totient is φ = 67851840.

The previous prime is 75104719. The next prime is 75104749. The reversal of 75104731 is 13740157.

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

It is a cyclic number.

It is not a de Polignac number, because 75104731 - 211 = 75102683 is a prime.

It is a super-2 number, since 2×751047312 = 11281441237164722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 75104731.

It is not an unprimeable number, because it can be changed into a prime (75104761) 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, 60850 + ... + 62071.

It is an arithmetic number, because the mean of its divisors is an integer number (10325448).

Almost surely, 275104731 is an apocalyptic number.

75104731 is a deficient number, since it is larger than the sum of its proper divisors (7498853).

75104731 is a wasteful number, since it uses less digits than its factorization.

75104731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122981.

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 75104731 is about 8666.2985755165. The cubic root of 75104731 is about 421.9125381211.

Adding to 75104731 its reverse (13740157), we get a palindrome (88844888).

The spelling of 75104731 in words is "seventy-five million, one hundred four thousand, seven hundred thirty-one".

Divisors: 1 13 47 611 122921 1597973 5777287 75104731