20432077 has 2 divisors, whose sum is σ = 20432078. Its totient is φ = 20432076.

The previous prime is 20432059. The next prime is 20432081. The reversal of 20432077 is 77023402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11634921 + 8797156 = 3411^2 + 2966^2 .

It is a cyclic number.

It is not a de Polignac number, because 20432077 - 2¹¹ = 20430029 is a prime.

It is equal to p_1296241 and since 20432077 and 1296241 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20432017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10216038 + 10216039.

It is an arithmetic number, because the mean of its divisors is an integer number (10216039).

Almost surely, 2^20432077 is an apocalyptic number.

It is an amenable number.

20432077 is a deficient number, since it is larger than the sum of its proper divisors (1).

20432077 is an equidigital number, since it uses as much as digits as its factorization.

20432077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2352, while the sum is 25.

The square root of 20432077 is about 4520.1855050429. The cubic root of 20432077 is about 273.3825806895.

Adding to 20432077 its reverse (77023402), we get a palindrome (97455479).

The spelling of 20432077 in words is "twenty million, four hundred thirty-two thousand, seventy-seven".