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30655151 = 199531693
BaseRepresentation
bin111010011110…
…0001010101111
32010200102221222
41310330022233
530321431101
63013013555
7521364422
oct164741257
963612858
1030655151
111633873a
12a3242bb
136474257
1440dd9b9
152a5801b
hex1d3c2af

30655151 has 8 divisors (see below), whose sum is σ = 32321520. Its totient is φ = 28994112.

The previous prime is 30655127. The next prime is 30655171. The reversal of 30655151 is 15155603.

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

It is a cyclic number.

It is not a de Polignac number, because 30655151 - 218 = 30393007 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 30655151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30655171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17261 + ... + 18953.

It is an arithmetic number, because the mean of its divisors is an integer number (4040190).

Almost surely, 230655151 is an apocalyptic number.

30655151 is a deficient number, since it is larger than the sum of its proper divisors (1666369).

30655151 is a wasteful number, since it uses less digits than its factorization.

30655151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2665.

The product of its (nonzero) digits is 2250, while the sum is 26.

The square root of 30655151 is about 5536.7094018018. The cubic root of 30655151 is about 312.9688782184.

The spelling of 30655151 in words is "thirty million, six hundred fifty-five thousand, one hundred fifty-one".

Divisors: 1 19 953 1693 18107 32167 1613429 30655151