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23870497 = 72619787
BaseRepresentation
bin101101100001…
…1110000100001
31122220202011111
41123003300201
522102323442
62211343321
7406616200
oct133036041
948822144
1023870497
1112524292
127bb1b41
134c3a071
143255237
152167b17
hex16c3c21

23870497 has 12 divisors (see below), whose sum is σ = 27847920. Its totient is φ = 20401416.

The previous prime is 23870491. The next prime is 23870503. The reversal of 23870497 is 79407832.

It is an interprime number because it is at equal distance from previous prime (23870491) and next prime (23870503).

It is not a de Polignac number, because 23870497 - 27 = 23870369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23870491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29938 + ... + 30724.

It is an arithmetic number, because the mean of its divisors is an integer number (2320660).

Almost surely, 223870497 is an apocalyptic number.

It is an amenable number.

23870497 is a deficient number, since it is larger than the sum of its proper divisors (3977423).

23870497 is an equidigital number, since it uses as much as digits as its factorization.

23870497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1420 (or 1413 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 23870497 is about 4885.7442626482. The cubic root of 23870497 is about 287.9301568355.

The spelling of 23870497 in words is "twenty-three million, eight hundred seventy thousand, four hundred ninety-seven".

Divisors: 1 7 49 619 787 4333 5509 30331 38563 487153 3410071 23870497