20021354 has 8 divisors (see below), whose sum is σ = 30051648. Its totient is φ = 10004140.

The previous prime is 20021341. The next prime is 20021357. The reversal of 20021354 is 45312002.

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 (20021357) 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, 2849 + ... + 6939.

It is an arithmetic number, because the mean of its divisors is an integer number (3756456).

Almost surely, 2^20021354 is an apocalyptic number.

20021354 is a deficient number, since it is larger than the sum of its proper divisors (10030294).

20021354 is a wasteful number, since it uses less digits than its factorization.

20021354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6540.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 20021354 is about 4474.5227678491. The cubic root of 20021354 is about 271.5383334207.

Adding to 20021354 its reverse (45312002), we get a palindrome (65333356).

The spelling of 20021354 in words is "twenty million, twenty-one thousand, three hundred fifty-four".