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16420485 = 351995501
BaseRepresentation
bin111110101000…
…111010000101
31010220020200010
4332220322011
513200423420
61343540433
7256400064
oct76507205
933806603
1016420485
1192a5a54
1255ba719
13352c083
1422761db
1516954e0
hexfa8e85

16420485 has 16 divisors (see below), whose sum is σ = 26409600. Its totient is φ = 8712000.

The previous prime is 16420463. The next prime is 16420507. The reversal of 16420485 is 58402461.

It is an interprime number because it is at equal distance from previous prime (16420463) and next prime (16420507).

It is not a de Polignac number, because 16420485 - 210 = 16419461 is a prime.

It is a Curzon number.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 235 + ... + 5735.

It is an arithmetic number, because the mean of its divisors is an integer number (1650600).

Almost surely, 216420485 is an apocalyptic number.

16420485 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16420485 is a deficient number, since it is larger than the sum of its proper divisors (9989115).

16420485 is a wasteful number, since it uses less digits than its factorization.

16420485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5708.

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 16420485 is about 4052.2197620563. The cubic root of 16420485 is about 254.1725582557.

The spelling of 16420485 in words is "sixteen million, four hundred twenty thousand, four hundred eighty-five".

Divisors: 1 3 5 15 199 597 995 2985 5501 16503 27505 82515 1094699 3284097 5473495 16420485