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23025421 = 672811223
BaseRepresentation
bin101011111010…
…1011100001101
31121022210221101
41113311130031
521343303141
62141303101
7366466336
oct127653415
947283841
1023025421
1111aa7381
127864a91
134a02513
1430b528d
15204c531
hex15f570d

23025421 has 8 divisors (see below), whose sum is σ = 23471424. Its totient is φ = 22582560.

The previous prime is 23025403. The next prime is 23025427. The reversal of 23025421 is 12452032.

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 23025421 - 25 = 23025389 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 (23025427) 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, 18216 + ... + 19438.

It is an arithmetic number, because the mean of its divisors is an integer number (2933928).

Almost surely, 223025421 is an apocalyptic number.

It is an amenable number.

23025421 is a deficient number, since it is larger than the sum of its proper divisors (446003).

23025421 is a wasteful number, since it uses less digits than its factorization.

23025421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1571.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 23025421 is about 4798.4811138526. The cubic root of 23025421 is about 284.4914332377.

Adding to 23025421 its reverse (12452032), we get a palindrome (35477453).

It can be divided in two parts, 230 and 25421, that added together give a triangular number (25651 = T226).

The spelling of 23025421 in words is "twenty-three million, twenty-five thousand, four hundred twenty-one".

Divisors: 1 67 281 1223 18827 81941 343663 23025421