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30268873 = 38379031
BaseRepresentation
bin111001101110…
…1110111001001
32002221211002101
41303131313021
530222100443
63000433401
7515165305
oct163356711
962854071
1030268873
11160a44a8
12a178861
13636a49b
14403cd05
1529cd84d
hex1cdddc9

30268873 has 4 divisors (see below), whose sum is σ = 30348288. Its totient is φ = 30189460.

The previous prime is 30268867. The next prime is 30268879. The reversal of 30268873 is 37886203.

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 an emirpimes, since its reverse is a distinct semiprime: 37886203 = 64358921.

It is an interprime number because it is at equal distance from previous prime (30268867) and next prime (30268879).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-30268873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30268879) 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, 39133 + ... + 39898.

It is an arithmetic number, because the mean of its divisors is an integer number (7587072).

Almost surely, 230268873 is an apocalyptic number.

It is an amenable number.

30268873 is a deficient number, since it is larger than the sum of its proper divisors (79415).

30268873 is an equidigital number, since it uses as much as digits as its factorization.

30268873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79414.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 30268873 is about 5501.7154597453. The cubic root of 30268873 is about 311.6487699155.

The spelling of 30268873 in words is "thirty million, two hundred sixty-eight thousand, eight hundred seventy-three".

Divisors: 1 383 79031 30268873