10219845 has 16 divisors (see below), whose sum is σ = 16597440. Its totient is φ = 5368704.

The previous prime is 10219841. The next prime is 10219877. The reversal of 10219845 is 54891201.

It is a happy number.

It is not a de Polignac number, because 10219845 - 2² = 10219841 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10219841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4080 + ... + 6089.

It is an arithmetic number, because the mean of its divisors is an integer number (1037340).

Almost surely, 2^10219845 is an apocalyptic number.

10219845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10219845 is a deficient number, since it is larger than the sum of its proper divisors (6377595).

10219845 is a wasteful number, since it uses less digits than its factorization.

10219845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10244.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 10219845 is about 3196.8492301014. The cubic root of 10219845 is about 217.0108441706.

The spelling of 10219845 in words is "ten million, two hundred nineteen thousand, eight hundred forty-five".