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487029220 = 225314871613
BaseRepresentation
bin11101000001110…
…111100111100100
31020221102122111021
4131001313213210
51444134413340
6120154420524
715032452156
oct3501674744
91227378437
10487029220
1122aa08297
12117131744
1379b93292
144897aad6
152cb54e4a
hex1d0779e4

487029220 has 48 divisors (see below), whose sum is σ = 1058577408. Its totient is φ = 188023680.

The previous prime is 487029211. The next prime is 487029227. The reversal of 487029220 is 22920784.

It is a super-2 number, since 2×4870292202 = 474394922267616800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (487029227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 301134 + ... + 302746.

It is an arithmetic number, because the mean of its divisors is an integer number (22053696).

Almost surely, 2487029220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 487029220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (529288704).

487029220 is an abundant number, since it is smaller than the sum of its proper divisors (571548188).

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

487029220 is a wasteful number, since it uses less digits than its factorization.

487029220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2140 (or 2138 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 487029220 is about 22068.7385230783. The cubic root of 487029220 is about 786.7770309425. Note that the first 3 decimals are identical.

The spelling of 487029220 in words is "four hundred eighty-seven million, twenty-nine thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 31 62 124 155 310 487 620 974 1613 1948 2435 3226 4870 6452 8065 9740 15097 16130 30194 32260 50003 60388 75485 100006 150970 200012 250015 301940 500030 785531 1000060 1571062 3142124 3927655 7855310 15710620 24351461 48702922 97405844 121757305 243514610 487029220