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74892001 = 312415871
BaseRepresentation
bin1000111011011…
…00001011100001
312012220220111211
410131230023201
5123133021001
611233110121
71566400012
oct435541341
9165826454
1074892001
1139302518
12210b8341
13126923c2
149d37009
156895351
hex476c2e1

74892001 has 4 divisors (see below), whose sum is σ = 77307904. Its totient is φ = 72476100.

The previous prime is 74891951. The next prime is 74892011. The reversal of 74892001 is 10029847.

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 74892001 - 29 = 74891489 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 2415871 = 74892001 / (7 + 4 + 8 + 9 + 2 + 0 + 0 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74892011) 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 3 ways as a sum of consecutive naturals, for example, 1207905 + ... + 1207966.

It is an arithmetic number, because the mean of its divisors is an integer number (19326976).

Almost surely, 274892001 is an apocalyptic number.

It is an amenable number.

74892001 is a deficient number, since it is larger than the sum of its proper divisors (2415903).

74892001 is a wasteful number, since it uses less digits than its factorization.

74892001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2415902.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 74892001 is about 8654.0164663583. The cubic root of 74892001 is about 421.5138134460.

The spelling of 74892001 in words is "seventy-four million, eight hundred ninety-two thousand, one".

Divisors: 1 31 2415871 74892001