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29970461 = 40037487
BaseRepresentation
bin111001001010…
…1000000011101
32002101122202002
41302111000131
530133023321
62550212045
7512513303
oct162250035
962348662
1029970461
1115a10284
12a054025
136294701
143da2273
15297020b
hex1c9501d

29970461 has 4 divisors (see below), whose sum is σ = 29981952. Its totient is φ = 29958972.

The previous prime is 29970433. The next prime is 29970487. The reversal of 29970461 is 16407992.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-29970461 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 (29970431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260 + ... + 7746.

It is an arithmetic number, because the mean of its divisors is an integer number (7495488).

Almost surely, 229970461 is an apocalyptic number.

It is an amenable number.

29970461 is a deficient number, since it is larger than the sum of its proper divisors (11491).

29970461 is an equidigital number, since it uses as much as digits as its factorization.

29970461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11490.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 29970461 is about 5474.5283815138. The cubic root of 29970461 is about 310.6212342818.

The spelling of 29970461 in words is "twenty-nine million, nine hundred seventy thousand, four hundred sixty-one".

Divisors: 1 4003 7487 29970461