20492077 has 2 divisors, whose sum is σ = 20492078. Its totient is φ = 20492076.

The previous prime is 20492071. The next prime is 20492083. The reversal of 20492077 is 77029402.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (20492071) and next prime (20492083).

It can be written as a sum of positive squares in only one way, i.e., 13169641 + 7322436 = 3629^2 + 2706^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20492077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20492071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10246038 + 10246039.

It is an arithmetic number, because the mean of its divisors is an integer number (10246039).

Almost surely, 2^20492077 is an apocalyptic number.

It is an amenable number.

20492077 is a deficient number, since it is larger than the sum of its proper divisors (1).

20492077 is an equidigital number, since it uses as much as digits as its factorization.

20492077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 20492077 is about 4526.8175355320. The cubic root of 20492077 is about 273.6499205346.

The spelling of 20492077 in words is "twenty million, four hundred ninety-two thousand, seventy-seven".