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23720093945 = 523919849451
BaseRepresentation
bin10110000101110100…
…111110100011111001
32021020002112121202222
4112011310332203321
5342034321001240
614521415533425
71466543320562
oct260564764371
967202477688
1023720093945
11a072413729
12471b98a275
132310315662
1412103b7169
1593c650eb5
hex585d3e8f9

23720093945 has 8 divisors (see below), whose sum is σ = 28583210880. Its totient is φ = 18896676400.

The previous prime is 23720093941. The next prime is 23720094007. The reversal of 23720093945 is 54939002732.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23720093945 - 22 = 23720093941 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23720093896 and 23720093905.

It is not an unprimeable number, because it can be changed into a prime (23720093941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9923531 + ... + 9925920.

It is an arithmetic number, because the mean of its divisors is an integer number (3572901360).

Almost surely, 223720093945 is an apocalyptic number.

It is an amenable number.

23720093945 is a deficient number, since it is larger than the sum of its proper divisors (4863116935).

23720093945 is a wasteful number, since it uses less digits than its factorization.

23720093945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19849695.

The product of its (nonzero) digits is 408240, while the sum is 44.

The spelling of 23720093945 in words is "twenty-three billion, seven hundred twenty million, ninety-three thousand, nine hundred forty-five".

Divisors: 1 5 239 1195 19849451 99247255 4744018789 23720093945