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307679423 = 7183109479
BaseRepresentation
bin10010010101101…
…101000010111111
3210102221201211012
4102111231002333
51112231220143
650310345435
710424142362
oct2225550277
9712851735
10307679423
1114874a117
128705b27b
134b98933c
142cc120d9
151c029418
hex1256d0bf

307679423 has 16 divisors (see below), whose sum is σ = 319334400. Its totient is φ = 296321760.

The previous prime is 307679399. The next prime is 307679429. The reversal of 307679423 is 324976703.

It is a cyclic number.

It is not a de Polignac number, because 307679423 - 212 = 307675327 is a prime.

It is a super-2 number, since 2×3076794232 = 189333254675225858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (307679429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 642098 + ... + 642576.

It is an arithmetic number, because the mean of its divisors is an integer number (19958400).

Almost surely, 2307679423 is an apocalyptic number.

307679423 is a deficient number, since it is larger than the sum of its proper divisors (11654977).

307679423 is a wasteful number, since it uses less digits than its factorization.

307679423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742.

The product of its (nonzero) digits is 190512, while the sum is 41.

The square root of 307679423 is about 17540.7931120574. The cubic root of 307679423 is about 675.0969576315.

The spelling of 307679423 in words is "three hundred seven million, six hundred seventy-nine thousand, four hundred twenty-three".

Divisors: 1 71 83 109 479 5893 7739 9047 34009 39757 52211 642337 2822747 3706981 4333513 307679423