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30027357 = 3218118433
BaseRepresentation
bin111001010001…
…0111001011101
32002111112210100
41302202321131
530141333412
62551331313
7513141213
oct162427135
962445710
1030027357
1115a49aa8
12a080b39
1362b4589
143db8cb3
152981edc
hex1ca2e5d

30027357 has 12 divisors (see below), whose sum is σ = 43614844. Its totient is φ = 19906560.

The previous prime is 30027337. The next prime is 30027359. The reversal of 30027357 is 75372003.

30027357 is a `hidden beast` number, since 300 + 2 + 7 + 357 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6320196 + 23707161 = 2514^2 + 4869^2 .

It is not a de Polignac number, because 30027357 - 212 = 30023261 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30027357.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30027359) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7588 + ... + 10845.

Almost surely, 230027357 is an apocalyptic number.

It is an amenable number.

30027357 is a deficient number, since it is larger than the sum of its proper divisors (13587487).

30027357 is a wasteful number, since it uses less digits than its factorization.

30027357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18620 (or 18617 counting only the distinct ones).

The product of its (nonzero) digits is 4410, while the sum is 27.

The square root of 30027357 is about 5479.7223469807. The cubic root of 30027357 is about 310.8176714112.

The spelling of 30027357 in words is "thirty million, twenty-seven thousand, three hundred fifty-seven".