20269772 has 6 divisors (see below), whose sum is σ = 35472108. Its totient is φ = 10134884.

The previous prime is 20269771. The next prime is 20269793. The reversal of 20269772 is 27796202.

It is not an unprimeable number, because it can be changed into a prime (20269771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2533718 + ... + 2533725.

It is an arithmetic number, because the mean of its divisors is an integer number (5912018).

Almost surely, 2^20269772 is an apocalyptic number.

It is an amenable number.

20269772 is a deficient number, since it is larger than the sum of its proper divisors (15202336).

20269772 is a wasteful number, since it uses less digits than its factorization.

20269772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5067447 (or 5067445 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 20269772 is about 4502.1963528927. The cubic root of 20269772 is about 272.6567714467.

The spelling of 20269772 in words is "twenty million, two hundred sixty-nine thousand, seven hundred seventy-two".