20214772 has 6 divisors (see below), whose sum is σ = 35375858. Its totient is φ = 10107384.

The previous prime is 20214767. The next prime is 20214781. The reversal of 20214772 is 27741202.

It can be written as a sum of positive squares in only one way, i.e., 16695396 + 3519376 = 4086^2 + 1876^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2526843 + ... + 2526850.

Almost surely, 2^20214772 is an apocalyptic number.

It is an amenable number.

20214772 is a deficient number, since it is larger than the sum of its proper divisors (15161086).

20214772 is a wasteful number, since it uses less digits than its factorization.

20214772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5053697 (or 5053695 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 25.

The square root of 20214772 is about 4496.0840739470. The cubic root of 20214772 is about 272.4099390961.

Adding to 20214772 its reverse (27741202), we get a palindrome (47955974).

The spelling of 20214772 in words is "twenty million, two hundred fourteen thousand, seven hundred seventy-two".