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30797306 = 297158749
BaseRepresentation
bin111010101111…
…0110111111010
32010221122221222
41311132313322
530341003211
63020032042
7522526031
oct165366772
963848858
1030797306
1116425521
12a392622
1364c3b77
144139718
152a851db
hex1d5edfa

30797306 has 8 divisors (see below), whose sum is σ = 46672500. Its totient is φ = 15239808.

The previous prime is 30797303. The next prime is 30797311. The reversal of 30797306 is 60379703.

It can be written as a sum of positive squares in 2 ways, for example, as 26615281 + 4182025 = 5159^2 + 2045^2 .

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

It is not an unprimeable number, because it can be changed into a prime (30797303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79181 + ... + 79568.

Almost surely, 230797306 is an apocalyptic number.

30797306 is a deficient number, since it is larger than the sum of its proper divisors (15875194).

30797306 is a wasteful number, since it uses less digits than its factorization.

30797306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158848.

The product of its (nonzero) digits is 23814, while the sum is 35.

The square root of 30797306 is about 5549.5320523446. The cubic root of 30797306 is about 313.4519019604.

The spelling of 30797306 in words is "thirty million, seven hundred ninety-seven thousand, three hundred six".

Divisors: 1 2 97 194 158749 317498 15398653 30797306