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4240215 = 33572641
BaseRepresentation
bin10000001011001101010111
321222102111000
4100023031113
52041141330
6230514343
751020100
oct20131527
97872430
104240215
112436811
1215059b3
13b56005
147c53a7
1558b560
hex40b357

4240215 has 48 divisors (see below), whose sum is σ = 8782560. Its totient is φ = 1935360.

The previous prime is 4240207. The next prime is 4240217. The reversal of 4240215 is 5120424.

It is not a de Polignac number, because 4240215 - 23 = 4240207 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4240217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6295 + ... + 6935.

It is an arithmetic number, because the mean of its divisors is an integer number (182970).

Almost surely, 24240215 is an apocalyptic number.

4240215 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

4240215 is an abundant number, since it is smaller than the sum of its proper divisors (4542345).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4240215 is a wasteful number, since it uses less digits than its factorization.

4240215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669 (or 656 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 4240215 is about 2059.1782341507. The cubic root of 4240215 is about 161.8561823755.

Adding to 4240215 its reverse (5120424), we get a palindrome (9360639).

The spelling of 4240215 in words is "four million, two hundred forty thousand, two hundred fifteen".