20214651 has 8 divisors (see below), whose sum is σ = 28371520. Its totient is φ = 12767112.

The previous prime is 20214647. The next prime is 20214661. The reversal of 20214651 is 15641202.

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

It is not a de Polignac number, because 20214651 - 2² = 20214647 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20214611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177265 + ... + 177378.

It is an arithmetic number, because the mean of its divisors is an integer number (3546440).

Almost surely, 2^20214651 is an apocalyptic number.

20214651 is a deficient number, since it is larger than the sum of its proper divisors (8156869).

20214651 is a wasteful number, since it uses less digits than its factorization.

20214651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354665.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 20214651 is about 4496.0706177728. The cubic root of 20214651 is about 272.4093955717.

Adding to 20214651 its reverse (15641202), we get a palindrome (35855853).

The spelling of 20214651 in words is "twenty million, two hundred fourteen thousand, six hundred fifty-one".