10857215 has 8 divisors (see below), whose sum is σ = 13097328. Its totient is φ = 8640000.

The previous prime is 10857193. The next prime is 10857229. The reversal of 10857215 is 51275801.

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

It is not a de Polignac number, because 10857215 - 2⁸ = 10856959 is a prime.

It is a Duffinian number.

It is a zygodrome in base 4.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4661 + ... + 6590.

It is an arithmetic number, because the mean of its divisors is an integer number (1637166).

Almost surely, 2^10857215 is an apocalyptic number.

10857215 is a deficient number, since it is larger than the sum of its proper divisors (2240113).

10857215 is a wasteful number, since it uses less digits than its factorization.

10857215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11449.

The product of its (nonzero) digits is 2800, while the sum is 29.

The square root of 10857215 is about 3295.0288314368. The cubic root of 10857215 is about 221.4315394280.

The spelling of 10857215 in words is "ten million, eight hundred fifty-seven thousand, two hundred fifteen".