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29970605 = 572149821
BaseRepresentation
bin111001001010…
…1000010101101
32002101122221102
41302111002231
530133024410
62550212445
7512513600
oct162250255
962348842
1029970605
1115a103a5
12a054125
1362947b2
143da2337
1529702a5
hex1c950ad

29970605 has 24 divisors (see below), whose sum is σ = 42168600. Its totient is φ = 20388480.

The previous prime is 29970571. The next prime is 29970623. The reversal of 29970605 is 50607992.

It can be written as a sum of positive squares in 4 ways, for example, as 5929 + 29964676 = 77^2 + 5474^2 .

It is not a de Polignac number, because 29970605 - 220 = 28922029 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36095 + ... + 36915.

It is an arithmetic number, because the mean of its divisors is an integer number (1757025).

Almost surely, 229970605 is an apocalyptic number.

It is an amenable number.

29970605 is a deficient number, since it is larger than the sum of its proper divisors (12197995).

29970605 is a wasteful number, since it uses less digits than its factorization.

29970605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989 (or 982 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 38.

The square root of 29970605 is about 5474.5415333158. The cubic root of 29970605 is about 310.6217317649.

The spelling of 29970605 in words is "twenty-nine million, nine hundred seventy thousand, six hundred five".

Divisors: 1 5 7 35 49 149 245 745 821 1043 4105 5215 5747 7301 28735 36505 40229 122329 201145 611645 856303 4281515 5994121 29970605