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34272421 = 107320303
BaseRepresentation
bin1000001010111…
…1010010100101
32101111012220221
42002233102211
532233204141
63222324341
7564211411
oct202572245
971435827
1034272421
1118389417
12b5896b1
13713c851
1447a1d41
15301ebd1
hex20af4a5

34272421 has 4 divisors (see below), whose sum is σ = 34592832. Its totient is φ = 33952012.

The previous prime is 34272401. The next prime is 34272437. The reversal of 34272421 is 12427243.

It is a happy number.

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: 12427243 = 65319031.

It is a cyclic number.

It is not a de Polignac number, because 34272421 - 25 = 34272389 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 (34272401) 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, 160045 + ... + 160258.

It is an arithmetic number, because the mean of its divisors is an integer number (8648208).

Almost surely, 234272421 is an apocalyptic number.

It is an amenable number.

34272421 is a deficient number, since it is larger than the sum of its proper divisors (320411).

34272421 is a wasteful number, since it uses less digits than its factorization.

34272421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320410.

The product of its digits is 2688, while the sum is 25.

The square root of 34272421 is about 5854.2651972728. The cubic root of 34272421 is about 324.8241131129.

Adding to 34272421 its reverse (12427243), we get a palindrome (46699664).

It can be divided in two parts, 3427242 and 1, that added together give a palindrome (3427243).

The spelling of 34272421 in words is "thirty-four million, two hundred seventy-two thousand, four hundred twenty-one".

Divisors: 1 107 320303 34272421