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29012538 = 234879929
BaseRepresentation
bin110111010101…
…1001000111010
32000120222201110
41232223020322
524411400123
62513501150
7501413442
oct156531072
960528643
1029012538
1115416605
1298717b6
13601a6a9
143bd3122
152831493
hex1bab23a

29012538 has 16 divisors (see below), whose sum is σ = 58150080. Its totient is φ = 9650016.

The previous prime is 29012531. The next prime is 29012539. The reversal of 29012538 is 83521092.

It is a happy number.

It is a super-2 number, since 2×290125382 = 1683454722402888, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (29012531) 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, 2043 + ... + 7886.

It is an arithmetic number, because the mean of its divisors is an integer number (3634380).

Almost surely, 229012538 is an apocalyptic number.

29012538 is an abundant number, since it is smaller than the sum of its proper divisors (29137542).

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

29012538 is a wasteful number, since it uses less digits than its factorization.

29012538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10421.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 29012538 is about 5386.3288054110. The cubic root of 29012538 is about 307.2759528655.

The spelling of 29012538 in words is "twenty-nine million, twelve thousand, five hundred thirty-eight".

Divisors: 1 2 3 6 487 974 1461 2922 9929 19858 29787 59574 4835423 9670846 14506269 29012538