10209285 has 24 divisors (see below), whose sum is σ = 17777760. Its totient is φ = 5419872.

The previous prime is 10209281. The next prime is 10209307. The reversal of 10209285 is 58290201.

It is not a de Polignac number, because 10209285 - 2² = 10209281 is a prime.

It is a super-2 number, since 2×10209285² = 208459000422450, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10209281) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13446 + ... + 14184.

It is an arithmetic number, because the mean of its divisors is an integer number (740740).

Almost surely, 2^10209285 is an apocalyptic number.

10209285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10209285 is a deficient number, since it is larger than the sum of its proper divisors (7568475).

10209285 is a wasteful number, since it uses less digits than its factorization.

10209285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1057 (or 1054 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 10209285 is about 3195.1971770143. The cubic root of 10209285 is about 216.9360738170.

Adding to 10209285 its reverse (58290201), we get a palindrome (68499486).

The spelling of 10209285 in words is "ten million, two hundred nine thousand, two hundred eighty-five".