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80215952 = 2422921893
BaseRepresentation
bin1001100011111…
…11111110010000
312120221101121012
410301333332100
5131013402302
611543150052
71662552515
oct461777620
9176841535
1080215952
1141309483
1222a45328
131380777b
14a92130c
157097a52
hex4c7ff90

80215952 has 20 divisors (see below), whose sum is σ = 156104220. Its totient is φ = 39931008.

The previous prime is 80215937. The next prime is 80215969. The reversal of 80215952 is 25951208.

It can be written as a sum of positive squares in 2 ways, for example, as 68492176 + 11723776 = 8276^2 + 3424^2 .

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, 7283 + ... + 14610.

It is an arithmetic number, because the mean of its divisors is an integer number (7805211).

Almost surely, 280215952 is an apocalyptic number.

It is an amenable number.

80215952 is a deficient number, since it is larger than the sum of its proper divisors (75888268).

80215952 is a wasteful number, since it uses less digits than its factorization.

80215952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22130 (or 22124 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 80215952 is about 8956.3358579276. The cubic root of 80215952 is about 431.2743017321.

The spelling of 80215952 in words is "eighty million, two hundred fifteen thousand, nine hundred fifty-two".

Divisors: 1 2 4 8 16 229 458 916 1832 3664 21893 43786 87572 175144 350288 5013497 10026994 20053988 40107976 80215952