432928781 has 2 divisors, whose sum is σ = 432928782. Its totient is φ = 432928780.

The previous prime is 432928777. The next prime is 432928787. The reversal of 432928781 is 187829234.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 260531881 + 172396900 = 16141^2 + 13130^2 .

It is a cyclic number.

It is not a de Polignac number, because 432928781 - 2² = 432928777 is a prime.

It is a super-2 number, since 2×432928781² = 374854658836291922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (432928787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 216464390 + 216464391.

It is an arithmetic number, because the mean of its divisors is an integer number (216464391).

Almost surely, 2^432928781 is an apocalyptic number.

It is an amenable number.

432928781 is a deficient number, since it is larger than the sum of its proper divisors (1).

432928781 is an equidigital number, since it uses as much as digits as its factorization.

432928781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 193536, while the sum is 44.

The square root of 432928781 is about 20806.9406929515. The cubic root of 432928781 is about 756.4939971190.

The spelling of 432928781 in words is "four hundred thirty-two million, nine hundred twenty-eight thousand, seven hundred eighty-one".