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1215230 = 25121523
BaseRepresentation
bin100101000101011111110
32021201222112
410220223332
5302341410
642014022
713220642
oct4505376
92251875
101215230
11760025
124a7312
13337193
14238c22
15190105
hex128afe

1215230 has 8 divisors (see below), whose sum is σ = 2187432. Its totient is φ = 486088.

The previous prime is 1215229. The next prime is 1215239. The reversal of 1215230 is 325121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1215239) 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, 60752 + ... + 60771.

It is an arithmetic number, because the mean of its divisors is an integer number (273429).

21215230 is an apocalyptic number.

1215230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1215230 is a deficient number, since it is larger than the sum of its proper divisors (972202).

1215230 is a wasteful number, since it uses less digits than its factorization.

1215230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121530.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 1215230 is about 1102.3747094341. The cubic root of 1215230 is about 106.7135319235.

The spelling of 1215230 in words is "one million, two hundred fifteen thousand, two hundred thirty".

Divisors: 1 2 5 10 121523 243046 607615 1215230