Search a number
-
+
23240030 = 2511415153
BaseRepresentation
bin101100010100…
…1110101011110
31121201201022212
41120221311132
521422140110
62150040422
7401352122
oct130516536
947651285
1023240030
1112133640
127949112
134a790c8
14312d582
152090e05
hex1629d5e

23240030 has 32 divisors (see below), whose sum is σ = 46757088. Its totient is φ = 8243200.

The previous prime is 23240029. The next prime is 23240039. The reversal of 23240030 is 3004232.

It is a junction number, because it is equal to n+sod(n) for n = 23239987 and 23240014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23240039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1934 + ... + 7086.

It is an arithmetic number, because the mean of its divisors is an integer number (1461159).

Almost surely, 223240030 is an apocalyptic number.

23240030 is an abundant number, since it is smaller than the sum of its proper divisors (23517058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23240030 is a wasteful number, since it uses less digits than its factorization.

23240030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5212.

The product of its (nonzero) digits is 144, while the sum is 14.

The square root of 23240030 is about 4820.7914288009. The cubic root of 23240030 is about 285.3725711148.

Adding to 23240030 its reverse (3004232), we get a palindrome (26244262).

The spelling of 23240030 in words is "twenty-three million, two hundred forty thousand, thirty".

Divisors: 1 2 5 10 11 22 41 55 82 110 205 410 451 902 2255 4510 5153 10306 25765 51530 56683 113366 211273 283415 422546 566830 1056365 2112730 2324003 4648006 11620015 23240030