20772019 has 2 divisors, whose sum is σ = 20772020. Its totient is φ = 20772018.

The previous prime is 20771987. The next prime is 20772029. The reversal of 20772019 is 91027702.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20772019 - 2⁵ = 20771987 is a prime.

It is a super-2 number, since 2×20772019² = 862953546672722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20772029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10386009 + 10386010.

It is an arithmetic number, because the mean of its divisors is an integer number (10386010).

Almost surely, 2^20772019 is an apocalyptic number.

20772019 is a deficient number, since it is larger than the sum of its proper divisors (1).

20772019 is an equidigital number, since it uses as much as digits as its factorization.

20772019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 20772019 is about 4557.6330479757. The cubic root of 20772019 is about 274.8903981971.

It can be divided in two parts, 2077 and 2019, that added together give a 12-th power (4096 = 2¹²).

The spelling of 20772019 in words is "twenty million, seven hundred seventy-two thousand, nineteen".