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1023457869 = 3375415121
BaseRepresentation
bin111101000000001…
…011101001001101
32122022211001021000
4331000023221031
54044001122434
6245320130513
734235151120
oct7500135115
92568731230
101023457869
11485796055
12246906a39
13134061495
1499cd63b7
155ecb6b99
hex3d00ba4d

1023457869 has 16 divisors (see below), whose sum is σ = 1732839040. Its totient is φ = 584832960.

The previous prime is 1023457843. The next prime is 1023457871. The reversal of 1023457869 is 9687543201.

1023457869 is a `hidden beast` number, since 10 + 2 + 3 + 4 + 578 + 69 = 666.

1023457869 is digitally balanced in base 10, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1023457869 - 27 = 1023457741 is a prime.

It is a super-2 number, since 2×10234578692 = 2094932019236042322, which contains 22 as substring.

It is a Duffinian number.

1023457869 is strictly pandigital in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023452869) 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, 2707372 + ... + 2707749.

It is an arithmetic number, because the mean of its divisors is an integer number (108302440).

It is a 2-persistent number, because it is pandigital, and so is 2⋅1023457869 = 2046915738, but 3⋅1023457869 = 3070373607 is not.

Almost surely, 21023457869 is an apocalyptic number.

It is an amenable number.

1023457869 is a deficient number, since it is larger than the sum of its proper divisors (709381171).

1023457869 is an equidigital number, since it uses as much as digits as its factorization.

1023457869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5415137 (or 5415131 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 1023457869 is about 31991.5280816656. The cubic root of 1023457869 is about 1007.7589329279.

The spelling of 1023457869 in words is "one billion, twenty-three million, four hundred fifty-seven thousand, eight hundred sixty-nine".

Divisors: 1 3 7 9 21 27 63 189 5415121 16245363 37905847 48736089 113717541 146208267 341152623 1023457869