Search a number
-
+
75005030 = 2523332191
BaseRepresentation
bin1000111100001…
…11110001100110
312020010122120002
410132013301212
5123200130110
611235341302
71600350362
oct436076146
9166118502
1075005030
113937a431
1221151832
1312701999
149d662a2
1568b8aa5
hex4787c66

75005030 has 16 divisors (see below), whose sum is σ = 135592704. Its totient is φ = 29872320.

The previous prime is 75005009. The next prime is 75005033. The reversal of 75005030 is 3050057.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 75004993 and 75005011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75005033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13766 + ... + 18425.

It is an arithmetic number, because the mean of its divisors is an integer number (8474544).

Almost surely, 275005030 is an apocalyptic number.

75005030 is a deficient number, since it is larger than the sum of its proper divisors (60587674).

75005030 is a wasteful number, since it uses less digits than its factorization.

75005030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32431.

The product of its (nonzero) digits is 525, while the sum is 20.

The square root of 75005030 is about 8660.5444401608. The cubic root of 75005030 is about 421.7257601430.

Adding to 75005030 its reverse (3050057), we get a palindrome (78055087).

The spelling of 75005030 in words is "seventy-five million, five thousand, thirty".

Divisors: 1 2 5 10 233 466 1165 2330 32191 64382 160955 321910 7500503 15001006 37502515 75005030