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2215245 = 35236421
BaseRepresentation
bin1000011100110101001101
311011112202010
420130311031
51031341440
6115251433
724554304
oct10346515
94145663
102215245
11128338a
128a9b79
135c73c6
1441943b
152db580
hex21cd4d

2215245 has 16 divisors (see below), whose sum is σ = 3699072. Its totient is φ = 1129920.

The previous prime is 2215237. The next prime is 2215277. The reversal of 2215245 is 5425122.

It is a happy number.

2215245 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2215245 - 23 = 2215237 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2866 + ... + 3555.

It is an arithmetic number, because the mean of its divisors is an integer number (231192).

22215245 is an apocalyptic number.

It is an amenable number.

2215245 is a deficient number, since it is larger than the sum of its proper divisors (1483827).

2215245 is a wasteful number, since it uses less digits than its factorization.

2215245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6452.

The product of its digits is 800, while the sum is 21.

The square root of 2215245 is about 1488.3699136975. The cubic root of 2215245 is about 130.3588703450.

The spelling of 2215245 in words is "two million, two hundred fifteen thousand, two hundred forty-five".