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70242069 = 31923131409
BaseRepresentation
bin1000010111111…
…00111100010101
311220011200000010
410023330330111
5120440221234
610545310433
71512022242
oct413747425
9156150003
1070242069
11367169a7
121b635419
1311724a71
1494865c9
1562776e9
hex42fcf15

70242069 has 32 divisors (see below), whose sum is σ = 103910400. Its totient is φ = 42007680.

The previous prime is 70242059. The next prime is 70242071. The reversal of 70242069 is 96024207.

It is a happy number.

It is not a de Polignac number, because 70242069 - 28 = 70241813 is a prime.

It is a super-2 number, since 2×702420692 = 9867896514801522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70242059) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 171537 + ... + 171945.

It is an arithmetic number, because the mean of its divisors is an integer number (3247200).

Almost surely, 270242069 is an apocalyptic number.

It is an amenable number.

70242069 is a deficient number, since it is larger than the sum of its proper divisors (33668331).

70242069 is a wasteful number, since it uses less digits than its factorization.

70242069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 70242069 is about 8381.0541699717. The cubic root of 70242069 is about 412.6030479007.

The spelling of 70242069 in words is "seventy million, two hundred forty-two thousand, sixty-nine".

Divisors: 1 3 19 23 57 69 131 393 409 437 1227 1311 2489 3013 7467 7771 9039 9407 23313 28221 53579 57247 160737 171741 178733 536199 1018001 1232317 3054003 3696951 23414023 70242069