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29801489 = 6128009
BaseRepresentation
bin111000110101…
…1110000010001
32002002001221212
41301223300101
530112121424
62542425505
7511210544
oct161536021
962061855
1029801489
1115905333
129b92295
136235823
143d5a85b
15293a10e
hex1c6bc11

29801489 has 6 divisors (see below), whose sum is σ = 30301830. Its totient is φ = 29309280.

The previous prime is 29801449. The next prime is 29801567. The reversal of 29801489 is 98410892.

It can be written as a sum of positive squares in 3 ways, for example, as 555025 + 29246464 = 745^2 + 5408^2 .

It is a de Polignac number, because none of the positive numbers 2k-29801489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29801419) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 284 + ... + 7725.

It is an arithmetic number, because the mean of its divisors is an integer number (5050305).

Almost surely, 229801489 is an apocalyptic number.

It is an amenable number.

29801489 is a deficient number, since it is larger than the sum of its proper divisors (500341).

29801489 is an frugal number, since it uses more digits than its factorization.

29801489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8131 (or 8070 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 41.

The square root of 29801489 is about 5459.0740057266. The cubic root of 29801489 is about 310.0363779717.

The spelling of 29801489 in words is "twenty-nine million, eight hundred one thousand, four hundred eighty-nine".

Divisors: 1 61 3721 8009 488549 29801489