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30206488 = 2313290447
BaseRepresentation
bin111001100111…
…0101000011000
32002211122111211
41303032220120
530213101423
62555232504
7514515364
oct163165030
962748454
1030206488
1116061644
12a148734
136347c80
1440242a4
1529ba10d
hex1ccea18

30206488 has 16 divisors (see below), whose sum is σ = 60994080. Its totient is φ = 13941408.

The previous prime is 30206461. The next prime is 30206509. The reversal of 30206488 is 88460203.

It is a happy number.

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, 145120 + ... + 145327.

It is an arithmetic number, because the mean of its divisors is an integer number (3812130).

Almost surely, 230206488 is an apocalyptic number.

It is an amenable number.

30206488 is an abundant number, since it is smaller than the sum of its proper divisors (30787592).

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

30206488 is a wasteful number, since it uses less digits than its factorization.

30206488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290466 (or 290462 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 30206488 is about 5496.0429401525. The cubic root of 30206488 is about 311.4345170227.

The spelling of 30206488 in words is "thirty million, two hundred six thousand, four hundred eighty-eight".

Divisors: 1 2 4 8 13 26 52 104 290447 580894 1161788 2323576 3775811 7551622 15103244 30206488