10215994 has 4 divisors (see below), whose sum is σ = 15323994. Its totient is φ = 5107996.

The previous prime is 10215971. The next prime is 10216013. The reversal of 10215994 is 49951201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49951201 = 2347 ⋅21283.

It can be written as a sum of positive squares in only one way, i.e., 8151025 + 2064969 = 2855^2 + 1437^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2553997 + ... + 2554000.

Almost surely, 2^10215994 is an apocalyptic number.

10215994 is a deficient number, since it is larger than the sum of its proper divisors (5108000).

10215994 is an equidigital number, since it uses as much as digits as its factorization.

10215994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5107999.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 10215994 is about 3196.2468615550. The cubic root of 10215994 is about 216.9835830346.

The spelling of 10215994 in words is "ten million, two hundred fifteen thousand, nine hundred ninety-four".