28301401 has 2 divisors, whose sum is σ = 28301402. Its totient is φ = 28301400.

The previous prime is 28301389. The next prime is 28301437. The reversal of 28301401 is 10410382.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18284176 + 10017225 = 4276^2 + 3165^2 .

It is a cyclic number.

It is not a de Polignac number, because 28301401 - 2⁵ = 28301369 is a prime.

It is not a weakly prime, because it can be changed into another prime (28301461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14150700 + 14150701.

It is an arithmetic number, because the mean of its divisors is an integer number (14150701).

Almost surely, 2^28301401 is an apocalyptic number.

It is an amenable number.

28301401 is a deficient number, since it is larger than the sum of its proper divisors (1).

28301401 is an equidigital number, since it uses as much as digits as its factorization.

28301401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 28301401 is about 5319.9061081940. The cubic root of 28301401 is about 304.7445715980.

Adding to 28301401 its reverse (10410382), we get a palindrome (38711783).

The spelling of 28301401 in words is "twenty-eight million, three hundred one thousand, four hundred one".