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30234975 = 352403133
BaseRepresentation
bin111001101010…
…1100101011111
32002220002120220
41303111211133
530220004400
63000012423
7514664421
oct163254537
962802526
1030234975
1116080a91
12a161113
136357c24
144030811
1529c37a0
hex1cd595f

30234975 has 12 divisors (see below), whose sum is σ = 49988616. Its totient is φ = 16125280.

The previous prime is 30234973. The next prime is 30234983. The reversal of 30234975 is 57943203.

It is a happy number.

It is not a de Polignac number, because 30234975 - 21 = 30234973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30234973) 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, 201492 + ... + 201641.

It is an arithmetic number, because the mean of its divisors is an integer number (4165718).

Almost surely, 230234975 is an apocalyptic number.

30234975 is a deficient number, since it is larger than the sum of its proper divisors (19753641).

30234975 is a wasteful number, since it uses less digits than its factorization.

30234975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403146 (or 403141 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 33.

The square root of 30234975 is about 5498.6339212572. The cubic root of 30234975 is about 311.5323883543.

The spelling of 30234975 in words is "thirty million, two hundred thirty-four thousand, nine hundred seventy-five".

Divisors: 1 3 5 15 25 75 403133 1209399 2015665 6046995 10078325 30234975