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1530494620 = 22576524731
BaseRepresentation
bin101101100111001…
…0111111010011100
310221122220011220221
41123032113322130
511113301311440
6411511451124
752632663304
oct13316277234
93848804827
101530494620
11715a19296
12368686aa4
131b510b425
141073a0604
158e56ed4a
hex5b397e9c

1530494620 has 12 divisors (see below), whose sum is σ = 3214038744. Its totient is φ = 612197840.

The previous prime is 1530494611. The next prime is 1530494639. The reversal of 1530494620 is 264940351.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38262346 + ... + 38262385.

It is an arithmetic number, because the mean of its divisors is an integer number (267836562).

Almost surely, 21530494620 is an apocalyptic number.

1530494620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1530494620 is an abundant number, since it is smaller than the sum of its proper divisors (1683544124).

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

1530494620 is a wasteful number, since it uses less digits than its factorization.

1530494620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76524740 (or 76524738 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 1530494620 is about 39121.5365240170. The cubic root of 1530494620 is about 1152.4195108816.

The spelling of 1530494620 in words is "one billion, five hundred thirty million, four hundred ninety-four thousand, six hundred twenty".

Divisors: 1 2 4 5 10 20 76524731 153049462 306098924 382623655 765247310 1530494620