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1487420020 = 22574371001
BaseRepresentation
bin101100010101000…
…0011101001110100
310211122211202200101
41120222003221310
511021234420040
6403332323444
751600601342
oct13052035164
93748752611
101487420020
116a3678749
12356173584
131a92092b8
1410178a992
158a8b209a
hex58a83a74

1487420020 has 12 divisors (see below), whose sum is σ = 3123582084. Its totient is φ = 594968000.

The previous prime is 1487419993. The next prime is 1487420059. The reversal of 1487420020 is 200247841.

It can be written as a sum of positive squares in 2 ways, for example, as 615635344 + 871784676 = 24812^2 + 29526^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37185481 + ... + 37185520.

It is an arithmetic number, because the mean of its divisors is an integer number (260298507).

Almost surely, 21487420020 is an apocalyptic number.

1487420020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1487420020 is an abundant number, since it is smaller than the sum of its proper divisors (1636162064).

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

1487420020 is a wasteful number, since it uses less digits than its factorization.

1487420020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74371010 (or 74371008 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 1487420020 is about 38567.0846707396. The cubic root of 1487420020 is about 1141.5051474010.

Adding to 1487420020 its reverse (200247841), we get a palindrome (1687667861).

The spelling of 1487420020 in words is "one billion, four hundred eighty-seven million, four hundred twenty thousand, twenty".

Divisors: 1 2 4 5 10 20 74371001 148742002 297484004 371855005 743710010 1487420020