10216815 has 16 divisors (see below), whose sum is σ = 18682368. Its totient is φ = 4670496.

The previous prime is 10216799. The next prime is 10216837. The reversal of 10216815 is 51861201.

It is not a de Polignac number, because 10216815 - 2⁴ = 10216799 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48547 + ... + 48756.

It is an arithmetic number, because the mean of its divisors is an integer number (1167648).

Almost surely, 2^10216815 is an apocalyptic number.

10216815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

10216815 is a deficient number, since it is larger than the sum of its proper divisors (8465553).

10216815 is an equidigital number, since it uses as much as digits as its factorization.

10216815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97318.

The product of its (nonzero) digits is 480, while the sum is 24.

The square root of 10216815 is about 3196.3752908568. The cubic root of 10216815 is about 216.9893954483.

The spelling of 10216815 in words is "ten million, two hundred sixteen thousand, eight hundred fifteen".