10213978 has 8 divisors (see below), whose sum is σ = 15987168. Its totient is φ = 4884924.

The previous prime is 10213967. The next prime is 10213981. The reversal of 10213978 is 87931201.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110976 + ... + 111067.

It is an arithmetic number, because the mean of its divisors is an integer number (1998396).

Almost surely, 2^10213978 is an apocalyptic number.

10213978 is a deficient number, since it is larger than the sum of its proper divisors (5773190).

10213978 is a wasteful number, since it uses less digits than its factorization.

10213978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222068.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 10213978 is about 3195.9314761115. The cubic root of 10213978 is about 216.9693090873.

The spelling of 10213978 in words is "ten million, two hundred thirteen thousand, nine hundred seventy-eight".