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38833213 = 213118223
BaseRepresentation
bin1001010000100…
…0110000111101
32201001221011011
42110020300331
534420130323
63504155221
7651035236
oct224106075
981057134
1038833213
111aa13a71
1211008b11
138078743
14522c08d
15362120d
hex2508c3d

38833213 has 4 divisors (see below), whose sum is σ = 38853568. Its totient is φ = 38812860.

The previous prime is 38833183. The next prime is 38833217. The reversal of 38833213 is 31233883.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 38833213 - 25 = 38833181 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 (38833217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6981 + ... + 11242.

It is an arithmetic number, because the mean of its divisors is an integer number (9713392).

Almost surely, 238833213 is an apocalyptic number.

It is an amenable number.

38833213 is a deficient number, since it is larger than the sum of its proper divisors (20355).

38833213 is a wasteful number, since it uses less digits than its factorization.

38833213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20354.

The product of its digits is 10368, while the sum is 31.

The square root of 38833213 is about 6231.6300435761. The cubic root of 38833213 is about 338.6370261834.

The spelling of 38833213 in words is "thirty-eight million, eight hundred thirty-three thousand, two hundred thirteen".

Divisors: 1 2131 18223 38833213