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30206045 = 57976471
BaseRepresentation
bin111001100111…
…0100001011101
32002211121220102
41303032201131
530213043140
62555230445
7514514162
oct163164135
962747812
1030206045
1116061281
12a148425
1363479cc
144024069
1529b9e15
hex1cce85d

30206045 has 8 divisors (see below), whose sum is σ = 36706560. Its totient is φ = 23858640.

The previous prime is 30206039. The next prime is 30206047. The reversal of 30206045 is 54060203.

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

It is not a de Polignac number, because 30206045 - 212 = 30201949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30206047) 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, 37841 + ... + 38630.

It is an arithmetic number, because the mean of its divisors is an integer number (4588320).

Almost surely, 230206045 is an apocalyptic number.

It is an amenable number.

30206045 is a deficient number, since it is larger than the sum of its proper divisors (6500515).

30206045 is an equidigital number, since it uses as much as digits as its factorization.

30206045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76555.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 30206045 is about 5496.0026382818. The cubic root of 30206045 is about 311.4329945444.

Adding to 30206045 its reverse (54060203), we get a palindrome (84266248).

The spelling of 30206045 in words is "thirty million, two hundred six thousand, forty-five".

Divisors: 1 5 79 395 76471 382355 6041209 30206045