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80251138 = 2113647779
BaseRepresentation
bin1001100100010…
…00100100000010
312121000011212101
410302020210002
5131021014023
611544021014
71663060222
oct462104402
9177004771
1080251138
1141332960
1222a6176a
131381a7a6
14a930082
1570a31ad
hex4c88902

80251138 has 8 divisors (see below), whose sum is σ = 131320080. Its totient is φ = 36477780.

The previous prime is 80251099. The next prime is 80251147. The reversal of 80251138 is 83115208.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1823868 + ... + 1823911.

It is an arithmetic number, because the mean of its divisors is an integer number (16415010).

Almost surely, 280251138 is an apocalyptic number.

80251138 is a deficient number, since it is larger than the sum of its proper divisors (51068942).

80251138 is a wasteful number, since it uses less digits than its factorization.

80251138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3647792.

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 80251138 is about 8958.2999503254. The cubic root of 80251138 is about 431.3373507017.

The spelling of 80251138 in words is "eighty million, two hundred fifty-one thousand, one hundred thirty-eight".

Divisors: 1 2 11 22 3647779 7295558 40125569 80251138