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90080260 = 2254504013
BaseRepresentation
bin1010101111010…
…00010000000100
320021111112212221
411113220100010
5141030032020
612534422124
72142445444
oct527502004
9207445787
1090080260
11469366a6
1226201944
131587c63a
14bd6c124
157d956aa
hex55e8404

90080260 has 12 divisors (see below), whose sum is σ = 189168588. Its totient is φ = 36032096.

The previous prime is 90080251. The next prime is 90080269. The reversal of 90080260 is 6208009.

It is an interprime number because it is at equal distance from previous prime (90080251) and next prime (90080269).

It can be written as a sum of positive squares in 2 ways, for example, as 9834496 + 80245764 = 3136^2 + 8958^2 .

It is a super-2 number, since 2×900802602 = 16228906483335200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (90080269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2251987 + ... + 2252026.

It is an arithmetic number, because the mean of its divisors is an integer number (15764049).

Almost surely, 290080260 is an apocalyptic number.

It is an amenable number.

90080260 is an abundant number, since it is smaller than the sum of its proper divisors (99088328).

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

90080260 is a wasteful number, since it uses less digits than its factorization.

90080260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4504022 (or 4504020 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 90080260 is about 9491.0621112708. The cubic root of 90080260 is about 448.2736489818.

Adding to 90080260 its reverse (6208009), we get a palindrome (96288269).

The spelling of 90080260 in words is "ninety million, eighty thousand, two hundred sixty".

Divisors: 1 2 4 5 10 20 4504013 9008026 18016052 22520065 45040130 90080260