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75290 = 257529
BaseRepresentation
bin10010011000011010
310211021112
4102120122
54402130
61340322
7432335
oct223032
9124245
1075290
1151626
12376a2
1328367
141d61c
1517495
hex1261a

75290 has 8 divisors (see below), whose sum is σ = 135540. Its totient is φ = 30112.

The previous prime is 75289. The next prime is 75307. The reversal of 75290 is 9257.

It can be written as a sum of positive squares in 2 ways, for example, as 73441 + 1849 = 271^2 + 43^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3755 + ... + 3774.

275290 is an apocalyptic number.

75290 is a deficient number, since it is larger than the sum of its proper divisors (60250).

75290 is a wasteful number, since it uses less digits than its factorization.

75290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7536.

The product of its (nonzero) digits is 630, while the sum is 23.

The square root of 75290 is about 274.3902330623. The cubic root of 75290 is about 42.2259179078.

The spelling of 75290 in words is "seventy-five thousand, two hundred ninety".

Divisors: 1 2 5 10 7529 15058 37645 75290