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350728093 = 793744189
BaseRepresentation
bin10100111001111…
…010111110011101
3220102221211111101
4110321322332131
51204241244333
654445153101
711456065612
oct2471727635
9812854441
10350728093
1116aa82231
129955b791
135787c721
143481a509
1520bce67d
hex14e7af9d

350728093 has 4 divisors (see below), whose sum is σ = 350780220. Its totient is φ = 350675968.

The previous prime is 350728067. The next prime is 350728129. The reversal of 350728093 is 390827053.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 390827053 = 1721227093.

It can be written as a sum of positive squares in 2 ways, for example, as 174953529 + 175774564 = 13227^2 + 13258^2 .

It is a cyclic number.

It is not a de Polignac number, because 350728093 - 25 = 350728061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (350728043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14158 + ... + 30031.

It is an arithmetic number, because the mean of its divisors is an integer number (87695055).

Almost surely, 2350728093 is an apocalyptic number.

It is an amenable number.

350728093 is a deficient number, since it is larger than the sum of its proper divisors (52127).

350728093 is an equidigital number, since it uses as much as digits as its factorization.

350728093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52126.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 350728093 is about 18727.7359282963. The cubic root of 350728093 is about 705.2182098705.

The spelling of 350728093 in words is "three hundred fifty million, seven hundred twenty-eight thousand, ninety-three".

Divisors: 1 7937 44189 350728093