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80631286 = 2131467659
BaseRepresentation
bin1001100111001…
…01010111110110
312121201111022221
410303211113312
5131120200121
612000112554
71666232431
oct463452766
9177644287
1080631286
114157252a
122300575a
1313921828
14a9cc818
15712ab41
hex4ce55f6

80631286 has 16 divisors (see below), whose sum is σ = 122316480. Its totient is φ = 39861640.

The previous prime is 80631253. The next prime is 80631301. The reversal of 80631286 is 68213608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122025 + ... + 122683.

It is an arithmetic number, because the mean of its divisors is an integer number (7644780).

Almost surely, 280631286 is an apocalyptic number.

80631286 is a deficient number, since it is larger than the sum of its proper divisors (41685194).

80631286 is a wasteful number, since it uses less digits than its factorization.

80631286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1259.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 80631286 is about 8979.4925246363. The cubic root of 80631286 is about 432.0173568415.

The spelling of 80631286 in words is "eighty million, six hundred thirty-one thousand, two hundred eighty-six".

Divisors: 1 2 131 262 467 659 934 1318 61177 86329 122354 172658 307753 615506 40315643 80631286