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80638037 = 317136637
BaseRepresentation
bin1001100111001…
…11000001010101
312121201211120222
410303213001111
5131120404122
612000204125
71666261214
oct463470125
9177654528
1080638037
1141577607
1223009645
131392491c
14a9d107b
15712cb42
hex4ce7055

80638037 has 8 divisors (see below), whose sum is σ = 84413952. Its totient is φ = 76935600.

The previous prime is 80638027. The next prime is 80638039. The reversal of 80638037 is 73083608.

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-80638037 is a prime.

It is a super-2 number, since 2×806380372 = 13004986022426738, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80637988 and 80638006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80638039) 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 7 ways as a sum of consecutive naturals, for example, 16118 + ... + 20519.

It is an arithmetic number, because the mean of its divisors is an integer number (10551744).

Almost surely, 280638037 is an apocalyptic number.

It is an amenable number.

80638037 is a deficient number, since it is larger than the sum of its proper divisors (3775915).

80638037 is a wasteful number, since it uses less digits than its factorization.

80638037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36739.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 80638037 is about 8979.8684288802. The cubic root of 80638037 is about 432.0294136494.

The spelling of 80638037 in words is "eighty million, six hundred thirty-eight thousand, thirty-seven".

Divisors: 1 31 71 2201 36637 1135747 2601227 80638037