28703401 has 2 divisors, whose sum is σ = 28703402. Its totient is φ = 28703400.

The previous prime is 28703393. The next prime is 28703419. The reversal of 28703401 is 10430782.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22553001 + 6150400 = 4749^2 + 2480^2 .

It is a cyclic number.

It is not a de Polignac number, because 28703401 - 2³ = 28703393 is a prime.

It is equal to p_1782430 and since 28703401 and 1782430 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (28703431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14351700 + 14351701.

It is an arithmetic number, because the mean of its divisors is an integer number (14351701).

Almost surely, 2^28703401 is an apocalyptic number.

It is an amenable number.

28703401 is a deficient number, since it is larger than the sum of its proper divisors (1).

28703401 is an equidigital number, since it uses as much as digits as its factorization.

28703401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 28703401 is about 5357.5555060120. Note that the first 4 decimals coincide. The cubic root of 28703401 is about 306.1806820207.

The spelling of 28703401 in words is "twenty-eight million, seven hundred three thousand, four hundred one".