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30355213 = 734712497
BaseRepresentation
bin111001111001…
…0111100001101
32010010012112011
41303302330031
530232331323
63002341221
7516005110
oct163627415
963105464
1030355213
1116153359
12a1ba811
13639a885
144062577
1529e920d
hex1cf2f0d

30355213 has 8 divisors (see below), whose sum is σ = 34794432. Its totient is φ = 25941696.

The previous prime is 30355201. The next prime is 30355223. The reversal of 30355213 is 31255303.

It is a happy number.

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 30355213 - 25 = 30355181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30355223) 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, 3820 + ... + 8677.

It is an arithmetic number, because the mean of its divisors is an integer number (4349304).

Almost surely, 230355213 is an apocalyptic number.

It is an amenable number.

30355213 is a deficient number, since it is larger than the sum of its proper divisors (4439219).

30355213 is a wasteful number, since it uses less digits than its factorization.

30355213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12851.

The product of its (nonzero) digits is 1350, while the sum is 22.

The square root of 30355213 is about 5509.5565157279. The cubic root of 30355213 is about 311.9448079284.

The spelling of 30355213 in words is "thirty million, three hundred fifty-five thousand, two hundred thirteen".

Divisors: 1 7 347 2429 12497 87479 4336459 30355213