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30806629 = 717325439
BaseRepresentation
bin111010110000…
…1001001100101
32010222010202021
41311201021211
530341303004
63020143141
7522565150
oct165411145
963863667
1030806629
1116431527
12a397ab1
1364c8199
14413cc97
152a87d54
hex1d61265

30806629 has 8 divisors (see below), whose sum is σ = 35412480. Its totient is φ = 26252016.

The previous prime is 30806627. The next prime is 30806639. The reversal of 30806629 is 92660803.

It is a happy number.

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

It is not a de Polignac number, because 30806629 - 21 = 30806627 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30806594 and 30806603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30806623) 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, 11509 + ... + 13930.

It is an arithmetic number, because the mean of its divisors is an integer number (4426560).

Almost surely, 230806629 is an apocalyptic number.

It is an amenable number.

30806629 is a deficient number, since it is larger than the sum of its proper divisors (4605851).

30806629 is a wasteful number, since it uses less digits than its factorization.

30806629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25619.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 30806629 is about 5550.3719695170. The cubic root of 30806629 is about 313.4835282900.

The spelling of 30806629 in words is "thirty million, eight hundred six thousand, six hundred twenty-nine".

Divisors: 1 7 173 1211 25439 178073 4400947 30806629