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76424231 = 1317345811
BaseRepresentation
bin1001000111000…
…10010000100111
312022210202100002
410203202100213
5124031033411
611330011515
71615411112
oct443422047
9168722302
1076424231
113a159724
1221716b9b
1312aaa950
14a215579
156a9933b
hex48e2427

76424231 has 8 divisors (see below), whose sum is σ = 87144624. Its totient is φ = 66395520.

The previous prime is 76424189. The next prime is 76424261. The reversal of 76424231 is 13242467.

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

It is a cyclic number.

It is not a de Polignac number, because 76424231 - 26 = 76424167 is a prime.

It is a super-2 number, since 2×764242312 = 11681326167882722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 76424194 and 76424203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76424261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172685 + ... + 173126.

It is an arithmetic number, because the mean of its divisors is an integer number (10893078).

Almost surely, 276424231 is an apocalyptic number.

76424231 is a deficient number, since it is larger than the sum of its proper divisors (10720393).

76424231 is a wasteful number, since it uses less digits than its factorization.

76424231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345841.

The product of its digits is 8064, while the sum is 29.

The square root of 76424231 is about 8742.0953437949. The cubic root of 76424231 is about 424.3690402041.

Adding to 76424231 its reverse (13242467), we get a palindrome (89666698).

The spelling of 76424231 in words is "seventy-six million, four hundred twenty-four thousand, two hundred thirty-one".

Divisors: 1 13 17 221 345811 4495543 5878787 76424231