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75869893 = 1123299881
BaseRepresentation
bin1001000010110…
…10111011000101
312021202120221001
410201122323011
5123410314033
611310053301
71610612011
oct441327305
9167676831
1075869893
11399101a0
12214aa231
1312945538
14a10d541
1569d9e7d
hex485aec5

75869893 has 8 divisors (see below), whose sum is σ = 86366016. Its totient is φ = 65973600.

The previous prime is 75869881. The next prime is 75869921. The reversal of 75869893 is 39896857.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2k-75869893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75869813) 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, 149688 + ... + 150193.

It is an arithmetic number, because the mean of its divisors is an integer number (10795752).

Almost surely, 275869893 is an apocalyptic number.

It is an amenable number.

75869893 is a deficient number, since it is larger than the sum of its proper divisors (10496123).

75869893 is a wasteful number, since it uses less digits than its factorization.

75869893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299915.

The product of its digits is 3265920, while the sum is 55.

The square root of 75869893 is about 8710.3325424464. The cubic root of 75869893 is about 423.3405053173.

It can be divided in two parts, 75 and 869893, that added together give a palindrome (869968).

The spelling of 75869893 in words is "seventy-five million, eight hundred sixty-nine thousand, eight hundred ninety-three".

Divisors: 1 11 23 253 299881 3298691 6897263 75869893