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30041789 = 47661967
BaseRepresentation
bin111001010011…
…0011010111101
32002112021120212
41302212122331
530142314124
62551522205
7513231251
oct162463275
962467525
1030041789
1115a59928
12a089365
1362bb00b
143dc0261
15298640e
hex1ca66bd

30041789 has 8 divisors (see below), whose sum is σ = 30759168. Its totient is φ = 29327760.

The previous prime is 30041779. The next prime is 30041813. The reversal of 30041789 is 98714003.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30041789 - 220 = 28993213 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30041729) 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, 30584 + ... + 31550.

It is an arithmetic number, because the mean of its divisors is an integer number (3844896).

Almost surely, 230041789 is an apocalyptic number.

It is an amenable number.

30041789 is a deficient number, since it is larger than the sum of its proper divisors (717379).

30041789 is an equidigital number, since it uses as much as digits as its factorization.

30041789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1675.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 30041789 is about 5481.0390438310. The cubic root of 30041789 is about 310.8674593670.

The spelling of 30041789 in words is "thirty million, forty-one thousand, seven hundred eighty-nine".

Divisors: 1 47 661 967 31067 45449 639187 30041789