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80995413 = 326998471
BaseRepresentation
bin1001101001111…
…10010001010101
312122101222211010
410310332101111
5131213323123
612012002433
72002310142
oct464762125
9178358733
1080995413
11417a1064
1223160419
1313a1b4a5
14aa853c9
15719d993
hex4d3e455

80995413 has 4 divisors (see below), whose sum is σ = 107993888. Its totient is φ = 53996940.

The previous prime is 80995399. The next prime is 80995417. The reversal of 80995413 is 31459908.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2k-80995413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80995417) 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, 13499233 + ... + 13499238.

It is an arithmetic number, because the mean of its divisors is an integer number (26998472).

Almost surely, 280995413 is an apocalyptic number.

It is an amenable number.

80995413 is a deficient number, since it is larger than the sum of its proper divisors (26998475).

80995413 is a wasteful number, since it uses less digits than its factorization.

80995413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26998474.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 80995413 is about 8999.7451630588. The cubic root of 80995413 is about 432.6667035321. Note that the first 3 decimals are identical.

The spelling of 80995413 in words is "eighty million, nine hundred ninety-five thousand, four hundred thirteen".

Divisors: 1 3 26998471 80995413