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315018090 = 23253500201
BaseRepresentation
bin10010110001101…
…100101101101010
3210221202120120200
4102301230231222
51121121034330
651131533030
710543416042
oct2261545552
9727676520
10315018090
11151901832
12895ba176
135035874a
142dba2722
151c9c8a60
hex12c6cb6a

315018090 has 24 divisors (see below), whose sum is σ = 819047268. Its totient is φ = 84004800.

The previous prime is 315018083. The next prime is 315018103. The reversal of 315018090 is 90810513.

It can be written as a sum of positive squares in 2 ways, for example, as 306215001 + 8803089 = 17499^2 + 2967^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1750011 + ... + 1750190.

Almost surely, 2315018090 is an apocalyptic number.

315018090 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

315018090 is an abundant number, since it is smaller than the sum of its proper divisors (504029178).

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

315018090 is a wasteful number, since it uses less digits than its factorization.

315018090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3500214 (or 3500211 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 315018090 is about 17748.7489699979. The cubic root of 315018090 is about 680.4222363223.

The spelling of 315018090 in words is "three hundred fifteen million, eighteen thousand, ninety".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 3500201 7000402 10500603 17501005 21001206 31501809 35002010 52503015 63003618 105006030 157509045 315018090