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76812430 = 257681243
BaseRepresentation
bin1001001010000…
…01000010001110
312100112110211211
410211001002032
5124130444210
611342205034
71621615642
oct445010216
9170473754
1076812430
113a3a4352
122188377a
1312bb5556
14a2b6c22
156b2438a
hex494108e

76812430 has 8 divisors (see below), whose sum is σ = 138262392. Its totient is φ = 30724968.

The previous prime is 76812427. The next prime is 76812431. The reversal of 76812430 is 3421867.

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

It is a junction number, because it is equal to n+sod(n) for n = 76812392 and 76812401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76812431) 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, 3840612 + ... + 3840631.

It is an arithmetic number, because the mean of its divisors is an integer number (17282799).

Almost surely, 276812430 is an apocalyptic number.

76812430 is a deficient number, since it is larger than the sum of its proper divisors (61449962).

76812430 is a wasteful number, since it uses less digits than its factorization.

76812430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7681250.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 76812430 is about 8764.2700779928. The cubic root of 76812430 is about 425.0863584603.

The spelling of 76812430 in words is "seventy-six million, eight hundred twelve thousand, four hundred thirty".

Divisors: 1 2 5 10 7681243 15362486 38406215 76812430