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32230021 = 612831867
BaseRepresentation
bin111101011110…
…0101010000101
32020122110021111
41322330222011
531222330041
63110445021
7540644035
oct172745205
966573244
1032230021
111721398a
12a963771
1368a6025
1443cd8c5
152c69981
hex1ebca85

32230021 has 8 divisors (see below), whose sum is σ = 32891744. Its totient is φ = 31572720.

The previous prime is 32230001. The next prime is 32230027. The reversal of 32230021 is 12003223.

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 32230021 - 213 = 32221829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 32229983 and 32230010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32230027) 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, 16330 + ... + 18196.

It is an arithmetic number, because the mean of its divisors is an integer number (4111468).

Almost surely, 232230021 is an apocalyptic number.

It is an amenable number.

32230021 is a deficient number, since it is larger than the sum of its proper divisors (661723).

32230021 is a wasteful number, since it uses less digits than its factorization.

32230021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2211.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 32230021 is about 5677.1490204151. The cubic root of 32230021 is about 318.2390940825.

Adding to 32230021 its reverse (12003223), we get a palindrome (44233244).

The spelling of 32230021 in words is "thirty-two million, two hundred thirty thousand, twenty-one".

Divisors: 1 61 283 1867 17263 113887 528361 32230021