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75068064 = 2532614273
BaseRepresentation
bin1000111100101…
…11001010100000
312020020212000200
410132113022200
5123204134224
611240545200
71601032221
oct436271240
9166225020
1075068064
1139412825
1221182200
1312724596
149d81248
1568cc5c9
hex47972a0

75068064 has 72 divisors (see below), whose sum is σ = 217025172. Its totient is φ = 24606720.

The previous prime is 75068057. The next prime is 75068083. The reversal of 75068064 is 46086057.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 62536464 + 12531600 = 7908^2 + 3540^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15432 + ... + 19704.

Almost surely, 275068064 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 75068064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108512586).

75068064 is an abundant number, since it is smaller than the sum of its proper divisors (141957108).

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

75068064 is a wasteful number, since it uses less digits than its factorization.

75068064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4350 (or 4339 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 75068064 is about 8664.1828235558. The cubic root of 75068064 is about 421.8438660810.

The spelling of 75068064 in words is "seventy-five million, sixty-eight thousand, sixty-four".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 32 36 48 61 72 96 122 144 183 244 288 366 488 549 732 976 1098 1464 1952 2196 2928 4273 4392 5856 8546 8784 12819 17092 17568 25638 34184 38457 51276 68368 76914 102552 136736 153828 205104 260653 307656 410208 521306 615312 781959 1042612 1230624 1563918 2085224 2345877 3127836 4170448 4691754 6255672 8340896 9383508 12511344 18767016 25022688 37534032 75068064