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69420465 = 32510914153
BaseRepresentation
bin1000010001101…
…00010110110001
311211121220222100
410020310112301
5120232423330
610515531013
71502031012
oct410642661
9154556870
1069420465
1136205694
121b2b9a69
13114c7aca
149311009
156164060
hex42345b1

69420465 has 24 divisors (see below), whose sum is σ = 121441320. Its totient is φ = 36681984.

The previous prime is 69420451. The next prime is 69420479. The reversal of 69420465 is 56402496.

It is an interprime number because it is at equal distance from previous prime (69420451) and next prime (69420479).

It can be written as a sum of positive squares in 4 ways, for example, as 8767521 + 60652944 = 2961^2 + 7788^2 .

It is not a de Polignac number, because 69420465 - 215 = 69387697 is a prime.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 2172 + ... + 11981.

It is an arithmetic number, because the mean of its divisors is an integer number (5060055).

Almost surely, 269420465 is an apocalyptic number.

It is an amenable number.

69420465 is a deficient number, since it is larger than the sum of its proper divisors (52020855).

69420465 is a wasteful number, since it uses less digits than its factorization.

69420465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14273 (or 14270 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 69420465 is about 8331.8944424422. The cubic root of 69420465 is about 410.9880295588.

The spelling of 69420465 in words is "sixty-nine million, four hundred twenty thousand, four hundred sixty-five".

Divisors: 1 3 5 9 15 45 109 327 545 981 1635 4905 14153 42459 70765 127377 212295 636885 1542677 4628031 7713385 13884093 23140155 69420465