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23124457 = 139166363
BaseRepresentation
bin101100000110…
…1100111101001
31121111211210101
41120031213221
521404440312
62143345401
7400361146
oct130154751
947454711
1023124457
1112064824
1278b2261
134a38615
1430dd3cd
15206ba57
hex160d9e9

23124457 has 4 divisors (see below), whose sum is σ = 23290960. Its totient is φ = 22957956.

The previous prime is 23124449. The next prime is 23124469. The reversal of 23124457 is 75442132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23124457 - 23 = 23124449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23124557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83043 + ... + 83320.

It is an arithmetic number, because the mean of its divisors is an integer number (5822740).

Almost surely, 223124457 is an apocalyptic number.

It is an amenable number.

23124457 is a deficient number, since it is larger than the sum of its proper divisors (166503).

23124457 is a wasteful number, since it uses less digits than its factorization.

23124457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166502.

The product of its digits is 6720, while the sum is 28.

The square root of 23124457 is about 4808.7895566348. The cubic root of 23124457 is about 284.8987308203.

Adding to 23124457 its reverse (75442132), we get a palindrome (98566589).

The spelling of 23124457 in words is "twenty-three million, one hundred twenty-four thousand, four hundred fifty-seven".

Divisors: 1 139 166363 23124457