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29980375 = 53239843
BaseRepresentation
bin111001001011…
…1011011010111
32002102011100021
41302113123113
530133333000
62550330011
7512554225
oct162273327
962364307
1029980375
1115a17777
12a059907
136299089
143da5b15
15297311a
hex1c976d7

29980375 has 8 divisors (see below), whose sum is σ = 37415664. Its totient is φ = 23984200.

The previous prime is 29980373. The next prime is 29980387. The reversal of 29980375 is 57308992.

It is a happy number.

It is not a de Polignac number, because 29980375 - 21 = 29980373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29980373) 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, 119797 + ... + 120046.

It is an arithmetic number, because the mean of its divisors is an integer number (4676958).

Almost surely, 229980375 is an apocalyptic number.

29980375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

29980375 is a deficient number, since it is larger than the sum of its proper divisors (7435289).

29980375 is an equidigital number, since it uses as much as digits as its factorization.

29980375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239858 (or 239848 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 29980375 is about 5475.4337727709. The cubic root of 29980375 is about 310.6554808846.

The spelling of 29980375 in words is "twenty-nine million, nine hundred eighty thousand, three hundred seventy-five".

Divisors: 1 5 25 125 239843 1199215 5996075 29980375