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490068920 = 235111113793
BaseRepresentation
bin11101001101011…
…101101110111000
31021011011002011202
4131031131232320
52000424201140
6120343513332
715100342235
oct3515355670
91234132152
10490068920
112316a4040
12118158848
137a6b8a13
144912c78c
152d055915
hex1d35dbb8

490068920 has 32 divisors (see below), whose sum is σ = 1202897520. Its totient is φ = 178206720.

The previous prime is 490068907. The next prime is 490068961. The reversal of 490068920 is 29860094.

It is a super-3 number, since 3×4900689203 (a number of 27 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 556457 + ... + 557336.

Almost surely, 2490068920 is an apocalyptic number.

490068920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

490068920 is an abundant number, since it is smaller than the sum of its proper divisors (712828600).

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

490068920 is a wasteful number, since it uses less digits than its factorization.

490068920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1113815 (or 1113811 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 490068920 is about 22137.5003105590. The cubic root of 490068920 is about 788.4104769605.

The spelling of 490068920 in words is "four hundred ninety million, sixty-eight thousand, nine hundred twenty".

Divisors: 1 2 4 5 8 10 11 20 22 40 44 55 88 110 220 440 1113793 2227586 4455172 5568965 8910344 11137930 12251723 22275860 24503446 44551720 49006892 61258615 98013784 122517230 245034460 490068920