28698407 has 2 divisors, whose sum is σ = 28698408. Its totient is φ = 28698406.

The previous prime is 28698389. The next prime is 28698433. The reversal of 28698407 is 70489682.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28698407 - 2¹⁸ = 28436263 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28698437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14349203 + 14349204.

It is an arithmetic number, because the mean of its divisors is an integer number (14349204).

Almost surely, 2^28698407 is an apocalyptic number.

28698407 is a deficient number, since it is larger than the sum of its proper divisors (1).

28698407 is an equidigital number, since it uses as much as digits as its factorization.

28698407 is an evil number, because the sum of its binary digits is even.

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

The square root of 28698407 is about 5357.0894149715. The cubic root of 28698407 is about 306.1629239043.

The spelling of 28698407 in words is "twenty-eight million, six hundred ninety-eight thousand, four hundred seven".