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9999642 = 231666607
BaseRepresentation
bin100110001001…
…010100011010
3200211000221010
4212021110122
510024442032
6554154350
7150665322
oct46112432
920730833
109999642
11570a974
1234229b6
1320c1663
141484282
15d27ccc
hex98951a

9999642 has 8 divisors (see below), whose sum is σ = 19999296. Its totient is φ = 3333212.

The previous prime is 9999637. The next prime is 9999653. The reversal of 9999642 is 2469999.

It is a sphenic number, since it is the product of 3 distinct primes.

9999642 is an admirable number.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 9999591 and 9999600.

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, 833298 + ... + 833309.

It is an arithmetic number, because the mean of its divisors is an integer number (2499912).

Almost surely, 29999642 is an apocalyptic number.

9999642 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

9999642 is a wasteful number, since it uses less digits than its factorization.

9999642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1666612.

The product of its digits is 314928, while the sum is 48.

The square root of 9999642 is about 3162.2210548916. The cubic root of 9999642 is about 215.4408980138.

The spelling of 9999642 in words is "nine million, nine hundred ninety-nine thousand, six hundred forty-two".

Divisors: 1 2 3 6 1666607 3333214 4999821 9999642