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153990284 = 22717323509
BaseRepresentation
bin10010010110110…
…11010010001100
3101201202111221212
421023123102030
5303410142114
623140313552
73546616160
oct1113332214
9351674855
10153990284
1179a181a8
12436a28b8
1325b98216
1416646ca0
15d7bbb3e
hex92db48c

153990284 has 24 divisors (see below), whose sum is σ = 326098080. Its totient is φ = 62113536.

The previous prime is 153990259. The next prime is 153990311. The reversal of 153990284 is 482099351.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161279 + ... + 162230.

It is an arithmetic number, because the mean of its divisors is an integer number (13587420).

Almost surely, 2153990284 is an apocalyptic number.

153990284 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

153990284 is an abundant number, since it is smaller than the sum of its proper divisors (172107796).

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

153990284 is a wasteful number, since it uses less digits than its factorization.

153990284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323537 (or 323535 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 153990284 is about 12409.2821710202. The cubic root of 153990284 is about 535.9995683890. Note that the first 3 decimals are identical.

The spelling of 153990284 in words is "one hundred fifty-three million, nine hundred ninety thousand, two hundred eighty-four".

Divisors: 1 2 4 7 14 17 28 34 68 119 238 476 323509 647018 1294036 2264563 4529126 5499653 9058252 10999306 21998612 38497571 76995142 153990284