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80738231 = 721647719
BaseRepresentation
bin1001100111111…
…11011110110111
312121220221000212
410303333132313
5131132110411
612002300035
72000156300
oct463773667
9177827025
1080738231
1141635912
122305761b
131395b402
14aa197a7
15714c68b
hex4cff7b7

80738231 has 6 divisors (see below), whose sum is σ = 93920040. Its totient is φ = 69204156.

The previous prime is 80738227. The next prime is 80738243. The reversal of 80738231 is 13283708.

It is not a de Polignac number, because 80738231 - 22 = 80738227 is a prime.

It is a super-2 number, since 2×807382312 = 13037323890018722, 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 (80738221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 823811 + ... + 823908.

It is an arithmetic number, because the mean of its divisors is an integer number (15653340).

Almost surely, 280738231 is an apocalyptic number.

80738231 is a deficient number, since it is larger than the sum of its proper divisors (13181809).

80738231 is a wasteful number, since it uses less digits than its factorization.

80738231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1647733 (or 1647726 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 80738231 is about 8985.4455092666. The cubic root of 80738231 is about 432.2082739859.

The spelling of 80738231 in words is "eighty million, seven hundred thirty-eight thousand, two hundred thirty-one".

Divisors: 1 7 49 1647719 11534033 80738231