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76514381 = 437317497
BaseRepresentation
bin1001000111110…
…00010001001101
312022222022222222
410203320101031
5124041430011
611331545125
71616234666
oct443702115
9168868888
1076514381
113a210429
122175b1a5
1312b0c9a8
14a23a36d
156ab5ddb
hex48f844d

76514381 has 4 divisors (see below), whose sum is σ = 76536252. Its totient is φ = 76492512.

The previous prime is 76514303. The next prime is 76514393. The reversal of 76514381 is 18341567.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14891881 + 61622500 = 3859^2 + 7850^2 .

It is a cyclic number.

It is not a de Polignac number, because 76514381 - 210 = 76513357 is a prime.

It is a super-2 number, since 2×765143812 = 11708900999626322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76514281) 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, 4376 + ... + 13121.

It is an arithmetic number, because the mean of its divisors is an integer number (19134063).

Almost surely, 276514381 is an apocalyptic number.

It is an amenable number.

76514381 is a deficient number, since it is larger than the sum of its proper divisors (21871).

76514381 is a wasteful number, since it uses less digits than its factorization.

76514381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21870.

The product of its digits is 20160, while the sum is 35.

The square root of 76514381 is about 8747.2499106862. The cubic root of 76514381 is about 424.5358365013.

The spelling of 76514381 in words is "seventy-six million, five hundred fourteen thousand, three hundred eighty-one".

Divisors: 1 4373 17497 76514381