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75213013 = 233599109
BaseRepresentation
bin1000111101110…
…10100011010101
312020112012212011
410132322203111
5123223304023
611244024221
71602204631
oct436724325
9166465764
1075213013
1139501717
1221232071
1312775555
149dbbdc1
15690a50d
hex47ba8d5

75213013 has 8 divisors (see below), whose sum is σ = 78710400. Its totient is φ = 71734608.

The previous prime is 75213007. The next prime is 75213029. The reversal of 75213013 is 31031257.

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

It is not a de Polignac number, because 75213013 - 225 = 41658581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75213713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3703 + ... + 12811.

It is an arithmetic number, because the mean of its divisors is an integer number (9838800).

Almost surely, 275213013 is an apocalyptic number.

It is an amenable number.

75213013 is a deficient number, since it is larger than the sum of its proper divisors (3497387).

75213013 is a wasteful number, since it uses less digits than its factorization.

75213013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9491.

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 75213013 is about 8672.5436291782. The cubic root of 75213013 is about 422.1152044280.

The spelling of 75213013 in words is "seventy-five million, two hundred thirteen thousand, thirteen".

Divisors: 1 23 359 8257 9109 209507 3270131 75213013