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75028641 = 325009547
BaseRepresentation
bin1000111100011…
…01100010100001
312020011211221120
410132031202201
5123201404031
611240042453
71600506252
oct436154241
9166154846
1075028641
1139396146
1221163429
131270c65c
149d70b29
1568c0a96
hex478d8a1

75028641 has 4 divisors (see below), whose sum is σ = 100038192. Its totient is φ = 50019092.

The previous prime is 75028631. The next prime is 75028643. The reversal of 75028641 is 14682057.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 75028641 - 25 = 75028609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (75028643) 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, 12504771 + ... + 12504776.

It is an arithmetic number, because the mean of its divisors is an integer number (25009548).

Almost surely, 275028641 is an apocalyptic number.

It is an amenable number.

75028641 is a deficient number, since it is larger than the sum of its proper divisors (25009551).

75028641 is a wasteful number, since it uses less digits than its factorization.

75028641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25009550.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 75028641 is about 8661.9074689124. The cubic root of 75028641 is about 421.7700074967.

The spelling of 75028641 in words is "seventy-five million, twenty-eight thousand, six hundred forty-one".

Divisors: 1 3 25009547 75028641