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29161029290 = 2518713155833
BaseRepresentation
bin11011001010001000…
…011111111010101010
32210021021121202220212
4123022020133322222
5434210210414130
621221342021122
72051431442051
oct331210377252
983237552825
1029161029290
1111404705a08
125799b777a2
132999619023
1415a8c57398
15b5a154e95
hex6ca21feaa

29161029290 has 16 divisors (see below), whose sum is σ = 52492994568. Its totient is φ = 11663713536.

The previous prime is 29161029283. The next prime is 29161029301. The reversal of 29161029290 is 9292016192.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 22911968689 + 6249060601 = 151367^2 + 79051^2 .

It is an unprimeable number.

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, 109214 + ... + 265046.

Almost surely, 229161029290 is an apocalyptic number.

29161029290 is a deficient number, since it is larger than the sum of its proper divisors (23331965278).

29161029290 is a wasteful number, since it uses less digits than its factorization.

29161029290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174553.

The product of its (nonzero) digits is 34992, while the sum is 41.

The spelling of 29161029290 in words is "twenty-nine billion, one hundred sixty-one million, twenty-nine thousand, two hundred ninety".

Divisors: 1 2 5 10 18713 37426 93565 155833 187130 311666 779165 1558330 2916102929 5832205858 14580514645 29161029290