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30254749 = 78948563
BaseRepresentation
bin111001101101…
…0011010011101
32002221002201021
41303122122131
530221122444
63000244141
7515106160
oct163323235
962832637
1030254749
1116094928
12a170651
136363c25
144037ad7
1529c9584
hex1cda69d

30254749 has 8 divisors (see below), whose sum is σ = 34966080. Its totient is φ = 25640736.

The previous prime is 30254737. The next prime is 30254773. The reversal of 30254749 is 94745203.

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 30254749 - 25 = 30254717 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 (30254779) 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, 23659 + ... + 24904.

It is an arithmetic number, because the mean of its divisors is an integer number (4370760).

Almost surely, 230254749 is an apocalyptic number.

It is an amenable number.

30254749 is a deficient number, since it is larger than the sum of its proper divisors (4711331).

30254749 is an equidigital number, since it uses as much as digits as its factorization.

30254749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48659.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 30254749 is about 5500.4317103297. The cubic root of 30254749 is about 311.6002887354.

The spelling of 30254749 in words is "thirty million, two hundred fifty-four thousand, seven hundred forty-nine".

Divisors: 1 7 89 623 48563 339941 4322107 30254749