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745102831 = 11269251809
BaseRepresentation
bin101100011010010…
…101110111101111
31220221001010221011
4230122111313233
53011221242311
6201534050051
724315161314
oct5432256757
91827033834
10745102831
11352655870
12189649927
13bb4a1765
1470d58d0b
1545631321
hex2c695def

745102831 has 8 divisors (see below), whose sum is σ = 815864400. Its totient is φ = 674845440.

The previous prime is 745102817. The next prime is 745102837. The reversal of 745102831 is 138201547.

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

It is a cyclic number.

It is not a de Polignac number, because 745102831 - 215 = 745070063 is a prime.

It is a super-2 number, since 2×7451028312 = 1110356457528429122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 745102793 and 745102802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745102837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122946 + ... + 128863.

It is an arithmetic number, because the mean of its divisors is an integer number (101983050).

Almost surely, 2745102831 is an apocalyptic number.

745102831 is a deficient number, since it is larger than the sum of its proper divisors (70761569).

745102831 is a wasteful number, since it uses less digits than its factorization.

745102831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252089.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 745102831 is about 27296.5717810864. The cubic root of 745102831 is about 906.5784774163.

The spelling of 745102831 in words is "seven hundred forty-five million, one hundred two thousand, eight hundred thirty-one".

Divisors: 1 11 269 2959 251809 2769899 67736621 745102831