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80251312 = 24311371181
BaseRepresentation
bin1001100100010…
…00100110110000
312121000012002211
410302020212300
5131021020222
611544021504
71663060561
oct462104660
9177005084
1080251312
1141332aa9
1222a61894
131381a8ab
14a930168
1570a3277
hex4c889b0

80251312 has 40 divisors (see below), whose sum is σ = 161811072. Its totient is φ = 38515200.

The previous prime is 80251273. The next prime is 80251319. The reversal of 80251312 is 21315208.

It is not an unprimeable number, because it can be changed into a prime (80251319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67362 + ... + 68542.

Almost surely, 280251312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80251312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80905536).

80251312 is an abundant number, since it is smaller than the sum of its proper divisors (81559760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80251312 is a wasteful number, since it uses less digits than its factorization.

80251312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1357 (or 1351 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 80251312 is about 8958.3096619842. The cubic root of 80251312 is about 431.3376624424.

The spelling of 80251312 in words is "eighty million, two hundred fifty-one thousand, three hundred twelve".

Divisors: 1 2 4 8 16 31 62 124 137 248 274 496 548 1096 1181 2192 2362 4247 4724 8494 9448 16988 18896 33976 36611 67952 73222 146444 161797 292888 323594 585776 647188 1294376 2588752 5015707 10031414 20062828 40125656 80251312