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75020000 = 255411231
BaseRepresentation
bin1000111100010…
…11011011100000
312020011102002112
410132023123200
5123201120000
611235534452
71600442126
oct436133340
9166142075
1075020000
113938a700
122115a428
1312708743
149d6b916
1568bd235
hex478b6e0

75020000 has 180 divisors, whose sum is σ = 209407968. Its totient is φ = 26400000.

The previous prime is 75019991. The next prime is 75020003. The reversal of 75020000 is 2057.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75020003) 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 29 ways as a sum of consecutive naturals, for example, 2419985 + ... + 2420015.

Almost surely, 275020000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 75020000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104703984).

75020000 is an abundant number, since it is smaller than the sum of its proper divisors (134387968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

75020000 is a wasteful number, since it uses less digits than its factorization.

75020000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83 (or 49 counting only the distinct ones).

The product of its (nonzero) digits is 70, while the sum is 14.

The square root of 75020000 is about 8661.4086614130. The cubic root of 75020000 is about 421.7538152155.

Adding to 75020000 its reverse (2057), we get a palindrome (75022057).

The spelling of 75020000 in words is "seventy-five million, twenty thousand".