428802461 has 2 divisors, whose sum is σ = 428802462. Its totient is φ = 428802460.

The previous prime is 428802457. The next prime is 428802499. The reversal of 428802461 is 164208824.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 332880025 + 95922436 = 18245^2 + 9794^2 .

It is a cyclic number.

It is not a de Polignac number, because 428802461 - 2² = 428802457 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (428802421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214401230 + 214401231.

It is an arithmetic number, because the mean of its divisors is an integer number (214401231).

Almost surely, 2^428802461 is an apocalyptic number.

It is an amenable number.

428802461 is a deficient number, since it is larger than the sum of its proper divisors (1).

428802461 is an equidigital number, since it uses as much as digits as its factorization.

428802461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24576, while the sum is 35.

The square root of 428802461 is about 20707.5459917393. The cubic root of 428802461 is about 754.0828950319.

The spelling of 428802461 in words is "four hundred twenty-eight million, eight hundred two thousand, four hundred sixty-one".