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69434490 = 23511092087
BaseRepresentation
bin1000010001101…
…11110001111010
311211122122012210
410020313301322
5120233400430
610520115550
71502116626
oct410676172
9154578183
1069434490
1136215184
121b305bb6
13115012c8
149316186
1561682b0
hex4237c7a

69434490 has 32 divisors (see below), whose sum is σ = 166872960. Its totient is φ = 18490304.

The previous prime is 69434489. The next prime is 69434527. The reversal of 69434490 is 9443496.

It is a super-2 number, since 2×694344902 = 9642296803120200, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32227 + ... + 34313.

It is an arithmetic number, because the mean of its divisors is an integer number (5214780).

Almost surely, 269434490 is an apocalyptic number.

69434490 is an abundant number, since it is smaller than the sum of its proper divisors (97438470).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

69434490 is a wasteful number, since it uses less digits than its factorization.

69434490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3206.

The product of its (nonzero) digits is 93312, while the sum is 39.

The square root of 69434490 is about 8332.7360452615. The cubic root of 69434490 is about 411.0157049664.

The spelling of 69434490 in words is "sixty-nine million, four hundred thirty-four thousand, four hundred ninety".

Divisors: 1 2 3 5 6 10 15 30 1109 2087 2218 3327 4174 5545 6261 6654 10435 11090 12522 16635 20870 31305 33270 62610 2314483 4628966 6943449 11572415 13886898 23144830 34717245 69434490