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80513398 = 275750957
BaseRepresentation
bin1001100110010…
…00100101110110
312121111111121201
410303020211312
5131102412043
611553403114
71665231640
oct463104566
9177444551
1080513398
11414a19a9
1222b6949a
13138acc84
14a99b890
157105c4d
hex4cc8976

80513398 has 8 divisors (see below), whose sum is σ = 138022992. Its totient is φ = 34505736.

The previous prime is 80513371. The next prime is 80513399. The reversal of 80513398 is 89331508.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80513399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2875465 + ... + 2875492.

It is an arithmetic number, because the mean of its divisors is an integer number (17252874).

Almost surely, 280513398 is an apocalyptic number.

80513398 is a deficient number, since it is larger than the sum of its proper divisors (57509594).

80513398 is a wasteful number, since it uses less digits than its factorization.

80513398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5750966.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 80513398 is about 8972.9258327482. The cubic root of 80513398 is about 431.8067086524.

It can be divided in two parts, 8051 and 3398, that added together give a square (11449 = 1072).

The spelling of 80513398 in words is "eighty million, five hundred thirteen thousand, three hundred ninety-eight".

Divisors: 1 2 7 14 5750957 11501914 40256699 80513398