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80631419 = 118982361
BaseRepresentation
bin1001100111001…
…01011001111011
312121201111111212
410303211121323
5131120201134
612000113335
71666233011
oct463453173
9177644455
1080631419
1141572640
122300584b
13139218cb
14a9cc8b1
15712abce
hex4ce567b

80631419 has 8 divisors (see below), whose sum is σ = 88950960. Its totient is φ = 72476800.

The previous prime is 80631413. The next prime is 80631427. The reversal of 80631419 is 91413608.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2k-80631419 is a prime.

It is a super-2 number, since 2×806314192 = 13002851459907122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80631413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40202 + ... + 42159.

It is an arithmetic number, because the mean of its divisors is an integer number (11118870).

Almost surely, 280631419 is an apocalyptic number.

80631419 is a gapful number since it is divisible by the number (89) formed by its first and last digit.

80631419 is a deficient number, since it is larger than the sum of its proper divisors (8319541).

80631419 is a wasteful number, since it uses less digits than its factorization.

80631419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82461.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 80631419 is about 8979.4999303970. The cubic root of 80631419 is about 432.0175943766.

The spelling of 80631419 in words is "eighty million, six hundred thirty-one thousand, four hundred nineteen".

Divisors: 1 11 89 979 82361 905971 7330129 80631419