20214788 has 12 divisors (see below), whose sum is σ = 38591952. Its totient is φ = 9188520.

The previous prime is 20214781. The next prime is 20214791. The reversal of 20214788 is 88741202.

It is not an unprimeable number, because it can be changed into a prime (20214781) 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, 229670 + ... + 229757.

It is an arithmetic number, because the mean of its divisors is an integer number (3215996).

Almost surely, 2^20214788 is an apocalyptic number.

It is an amenable number.

20214788 is a deficient number, since it is larger than the sum of its proper divisors (18377164).

20214788 is a wasteful number, since it uses less digits than its factorization.

20214788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459442 (or 459440 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 20214788 is about 4496.0858532728. The cubic root of 20214788 is about 272.4100109669.

The spelling of 20214788 in words is "twenty million, two hundred fourteen thousand, seven hundred eighty-eight".