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80292292 = 2217269457
BaseRepresentation
bin1001100100100…
…10100111000100
312121002021022121
410302102213010
5131023323132
611544535324
71663321213
oct462224704
9177067277
1080292292
1141360873
1222a81544
1313833442
14a94107a
1570b0497
hex4c929c4

80292292 has 18 divisors (see below), whose sum is σ = 149265242. Its totient is φ = 37784064.

The previous prime is 80292281. The next prime is 80292293. The reversal of 80292292 is 29229208.

80292292 is nontrivially palindromic in base 16.

It can be written as a sum of positive squares in 3 ways, for example, as 16516096 + 63776196 = 4064^2 + 7986^2 .

It is a super-2 number, since 2×802922922 = 12893704309226528, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80292293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33573 + ... + 35884.

Almost surely, 280292292 is an apocalyptic number.

It is an amenable number.

80292292 is a deficient number, since it is larger than the sum of its proper divisors (68972950).

80292292 is a wasteful number, since it uses less digits than its factorization.

80292292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69495 (or 69476 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 80292292 is about 8960.5966319213. The cubic root of 80292292 is about 431.4110702122.

The spelling of 80292292 in words is "eighty million, two hundred ninety-two thousand, two hundred ninety-two".

Divisors: 1 2 4 17 34 68 289 578 1156 69457 138914 277828 1180769 2361538 4723076 20073073 40146146 80292292