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23797481 = 19265921
BaseRepresentation
bin101101011000…
…1111011101001
31122210001000012
41122301323221
522043004411
62210021305
7406163261
oct132617351
948701005
1023797481
1112484444
127b77835
134c12a66
1432367a1
15215118b
hex16b1ee9

23797481 has 6 divisors (see below), whose sum is σ = 25116282. Its totient is φ = 22544640.

The previous prime is 23797471. The next prime is 23797483. The reversal of 23797481 is 18479732.

It can be written as a sum of positive squares in only one way, i.e., 14440000 + 9357481 = 3800^2 + 3059^2 .

It is a de Polignac number, because none of the positive numbers 2k-23797481 is a prime.

It is a super-2 number, since 2×237974812 = 1132640203890722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23797483) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 32600 + ... + 33321.

It is an arithmetic number, because the mean of its divisors is an integer number (4186047).

Almost surely, 223797481 is an apocalyptic number.

It is an amenable number.

23797481 is a deficient number, since it is larger than the sum of its proper divisors (1318801).

23797481 is an equidigital number, since it uses as much as digits as its factorization.

23797481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65959 (or 65940 counting only the distinct ones).

The product of its digits is 84672, while the sum is 41.

The square root of 23797481 is about 4878.2661878991. The cubic root of 23797481 is about 287.6362796884.

The spelling of 23797481 in words is "twenty-three million, seven hundred ninety-seven thousand, four hundred eighty-one".

Divisors: 1 19 361 65921 1252499 23797481