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33213077 = 139238943
BaseRepresentation
bin111111010110…
…0101010010101
32022111101202222
41332230222111
532000304302
63143512125
7552210062
oct176545225
968441688
1033213077
1117825527
12b158645
136b5b611
1445a7c69
152db0da2
hex1faca95

33213077 has 4 divisors (see below), whose sum is σ = 33452160. Its totient is φ = 32973996.

The previous prime is 33213049. The next prime is 33213079. The reversal of 33213077 is 77031233.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 77031233 = 174531249.

It is a cyclic number.

It is not a de Polignac number, because 33213077 - 214 = 33196693 is a prime.

It is a super-2 number, since 2×332130772 = 2206216967615858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33213079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119333 + ... + 119610.

It is an arithmetic number, because the mean of its divisors is an integer number (8363040).

Almost surely, 233213077 is an apocalyptic number.

It is an amenable number.

33213077 is a deficient number, since it is larger than the sum of its proper divisors (239083).

33213077 is a wasteful number, since it uses less digits than its factorization.

33213077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239082.

The product of its (nonzero) digits is 2646, while the sum is 26.

The square root of 33213077 is about 5763.0787778756. The cubic root of 33213077 is about 321.4423078057.

The spelling of 33213077 in words is "thirty-three million, two hundred thirteen thousand, seventy-seven".

Divisors: 1 139 238943 33213077