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30089029 = 37813217
BaseRepresentation
bin111001011000…
…1111101000101
32002121200101111
41302301331011
530200322104
62552525021
7513516055
oct162617505
962550344
1030089029
1115a91373
12a0b0771
136306679
143dd3565
152995404
hex1cb1f45

30089029 has 4 divisors (see below), whose sum is σ = 30902284. Its totient is φ = 29275776.

The previous prime is 30089021. The next prime is 30089047. The reversal of 30089029 is 92098003.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22944100 + 7144929 = 4790^2 + 2673^2 .

It is a cyclic number.

It is not a de Polignac number, because 30089029 - 23 = 30089021 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 (30089021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 406572 + ... + 406645.

It is an arithmetic number, because the mean of its divisors is an integer number (7725571).

Almost surely, 230089029 is an apocalyptic number.

It is an amenable number.

30089029 is a deficient number, since it is larger than the sum of its proper divisors (813255).

30089029 is an equidigital number, since it uses as much as digits as its factorization.

30089029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813254.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 30089029 is about 5485.3467529410. The cubic root of 30089029 is about 311.0303179330.

The spelling of 30089029 in words is "thirty million, eighty-nine thousand, twenty-nine".

Divisors: 1 37 813217 30089029