10021394 has 8 divisors (see below), whose sum is σ = 15057468. Its totient is φ = 5002240.

The previous prime is 10021393. The next prime is 10021411. The reversal of 10021394 is 49312001.

It can be written as a sum of positive squares in 2 ways, for example, as 9840769 + 180625 = 3137^2 + 425^2 .

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

It is not an unprimeable number, because it can be changed into a prime (10021393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2627 + ... + 5190.

Almost surely, 2^10021394 is an apocalyptic number.

10021394 is a deficient number, since it is larger than the sum of its proper divisors (5036074).

10021394 is an equidigital number, since it uses as much as digits as its factorization.

10021394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8460.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 10021394 is about 3165.6585412833. The cubic root of 10021394 is about 215.5969994867.

Adding to 10021394 its reverse (49312001), we get a palindrome (59333395).

The spelling of 10021394 in words is "ten million, twenty-one thousand, three hundred ninety-four".