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1315390 = 25199661
BaseRepresentation
bin101000001001000111110
32110211101011
411001020332
5314043030
644105434
714115646
oct5011076
92424334
101315390
118192aa
1253527a
1337094b
14263526
151aeb2a
hex14123e

1315390 has 16 divisors (see below), whose sum is σ = 2383200. Its totient is φ = 522720.

The previous prime is 1315373. The next prime is 1315397. The reversal of 1315390 is 935131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1315397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1660 + ... + 2320.

It is an arithmetic number, because the mean of its divisors is an integer number (148950).

21315390 is an apocalyptic number.

1315390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1315390 is a deficient number, since it is larger than the sum of its proper divisors (1067810).

1315390 is a wasteful number, since it uses less digits than its factorization.

1315390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 867.

The product of its (nonzero) digits is 405, while the sum is 22.

The square root of 1315390 is about 1146.9045295926. The cubic root of 1315390 is about 109.5682802874.

The spelling of 1315390 in words is "one million, three hundred fifteen thousand, three hundred ninety".

Divisors: 1 2 5 10 199 398 661 995 1322 1990 3305 6610 131539 263078 657695 1315390