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207929045 = 550981701
BaseRepresentation
bin11000110010010…
…11111011010101
3112111020220000202
430121023323111
5411212212140
632344350245
75103240062
oct1431137325
9474226022
10207929045
11a7409195
1259775385
133410234c
141d887c69
15133c3915
hexc64bed5

207929045 has 8 divisors (see below), whose sum is σ = 250008120. Its totient is φ = 166014400.

The previous prime is 207928949. The next prime is 207929047. The reversal of 207929045 is 540929702.

It can be written as a sum of positive squares in 4 ways, for example, as 10329796 + 197599249 = 3214^2 + 14057^2 .

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

It is not a de Polignac number, because 207929045 - 226 = 140820181 is a prime.

It is a super-2 number, since 2×2079290452 = 86468975509224050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (207929047) 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, 38306 + ... + 43395.

It is an arithmetic number, because the mean of its divisors is an integer number (31251015).

Almost surely, 2207929045 is an apocalyptic number.

It is an amenable number.

207929045 is a deficient number, since it is larger than the sum of its proper divisors (42079075).

207929045 is an equidigital number, since it uses as much as digits as its factorization.

207929045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82215.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 207929045 is about 14419.7449700055. The cubic root of 207929045 is about 592.4318329714.

It can be divided in two parts, 2079 and 29045, that multiplied together give a triangular number (60384555 = T10989).

The spelling of 207929045 in words is "two hundred seven million, nine hundred twenty-nine thousand, forty-five".

Divisors: 1 5 509 2545 81701 408505 41585809 207929045