Search a number
-
+
23271457 = 117183359
BaseRepresentation
bin101100011000…
…1100000100001
31121210022102211
41120301200201
521424141312
62150442121
7401542546
oct130614041
947708384
1023271457
1112155210
127963341
134a8a4c1
14313abcd
15209a3a7
hex1631821

23271457 has 16 divisors (see below), whose sum is σ = 26127360. Its totient is φ = 20549200.

The previous prime is 23271449. The next prime is 23271461. The reversal of 23271457 is 75417232.

It is a cyclic number.

It is not a de Polignac number, because 23271457 - 23 = 23271449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23271407) 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, 64644 + ... + 65002.

It is an arithmetic number, because the mean of its divisors is an integer number (1632960).

Almost surely, 223271457 is an apocalyptic number.

It is an amenable number.

23271457 is a deficient number, since it is larger than the sum of its proper divisors (2855903).

23271457 is a wasteful number, since it uses less digits than its factorization.

23271457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524.

The product of its digits is 11760, while the sum is 31.

The square root of 23271457 is about 4824.0498546346. The cubic root of 23271457 is about 285.5011476016.

Adding to 23271457 its reverse (75417232), we get a palindrome (98688689).

The spelling of 23271457 in words is "twenty-three million, two hundred seventy-one thousand, four hundred fifty-seven".

Divisors: 1 11 71 83 359 781 913 3949 5893 25489 29797 64823 280379 327767 2115587 23271457