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75147233 = 7223131509
BaseRepresentation
bin1000111101010…
…10011111100001
312020101212121212
410132222133201
5123214202413
611242355505
71601512100
oct436523741
9166355555
1075147233
1139467257
12211bbb95
1312751625
149da2037
1568e5ca8
hex47aa7e1

75147233 has 24 divisors (see below), whose sum is σ = 92093760. Its totient is φ = 61020960.

The previous prime is 75147227. The next prime is 75147251. The reversal of 75147233 is 33274157.

It is not a de Polignac number, because 75147233 - 24 = 75147217 is a prime.

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 75147233.

It is not an unprimeable number, because it can be changed into a prime (75147203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 147383 + ... + 147891.

It is an arithmetic number, because the mean of its divisors is an integer number (3837240).

Almost surely, 275147233 is an apocalyptic number.

It is an amenable number.

75147233 is a deficient number, since it is larger than the sum of its proper divisors (16946527).

75147233 is a wasteful number, since it uses less digits than its factorization.

75147233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677 (or 670 counting only the distinct ones).

The product of its digits is 17640, while the sum is 32.

The square root of 75147233 is about 8668.7503713050. The cubic root of 75147233 is about 421.9921103172.

The spelling of 75147233 in words is "seventy-five million, one hundred forty-seven thousand, two hundred thirty-three".

Divisors: 1 7 23 49 131 161 509 917 1127 3013 3563 6419 11707 21091 24941 66679 81949 147637 466753 573643 1533617 3267271 10735319 75147233