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30216862 = 213289399
BaseRepresentation
bin111001101000…
…1001010011110
32002212011202001
41303101022132
530213414422
62555352514
7514560544
oct163211236
962764661
1030216862
1116069415
12a15273a
13634c900
144027d94
1529bd227
hex1cd129e

30216862 has 12 divisors (see below), whose sum is σ = 49080600. Its totient is φ = 13946088.

The previous prime is 30216839. The next prime is 30216863. The reversal of 30216862 is 26861203.

It is a self number, because there is not a number n which added to its sum of digits gives 30216862.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30216863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 44362 + ... + 45037.

It is an arithmetic number, because the mean of its divisors is an integer number (4090050).

Almost surely, 230216862 is an apocalyptic number.

30216862 is a deficient number, since it is larger than the sum of its proper divisors (18863738).

30216862 is a wasteful number, since it uses less digits than its factorization.

30216862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89427 (or 89414 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 30216862 is about 5496.9866290541. The cubic root of 30216862 is about 311.4701655660.

The spelling of 30216862 in words is "thirty million, two hundred sixteen thousand, eight hundred sixty-two".

Divisors: 1 2 13 26 169 338 89399 178798 1162187 2324374 15108431 30216862