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306706 = 2153353
BaseRepresentation
bin1001010111000010010
3120120201111
41022320102
534303311
610323534
72415121
oct1127022
9516644
10306706
1119a484
121295aa
13a97aa
147dab8
1560d21
hex4ae12

306706 has 4 divisors (see below), whose sum is σ = 460062. Its totient is φ = 153352.

The previous prime is 306703. The next prime is 306707. The reversal of 306706 is 607603.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 607603 = 896827.

It can be written as a sum of positive squares in only one way, i.e., 194481 + 112225 = 441^2 + 335^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a d-powerful number, because it can be written as 37 + 0 + 75 + 65 + 0 + 67 .

It is not an unprimeable number, because it can be changed into a prime (306701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76675 + ... + 76678.

2306706 is an apocalyptic number.

306706 is a deficient number, since it is larger than the sum of its proper divisors (153356).

306706 is a wasteful number, since it uses less digits than its factorization.

306706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153355.

The product of its (nonzero) digits is 756, while the sum is 22.

The square root of 306706 is about 553.8104368825. The cubic root of 306706 is about 67.4384257872.

The spelling of 306706 in words is "three hundred six thousand, seven hundred six".

Divisors: 1 2 153353 306706