28353961 has 2 divisors, whose sum is σ = 28353962. Its totient is φ = 28353960.

The previous prime is 28353953. The next prime is 28353971. The reversal of 28353961 is 16935382.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26010000 + 2343961 = 5100^2 + 1531^2 .

It is a cyclic number.

It is not a de Polignac number, because 28353961 - 2³ = 28353953 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28353961.

It is not a weakly prime, because it can be changed into another prime (28353911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14176980 + 14176981.

It is an arithmetic number, because the mean of its divisors is an integer number (14176981).

Almost surely, 2^28353961 is an apocalyptic number.

It is an amenable number.

28353961 is a deficient number, since it is larger than the sum of its proper divisors (1).

28353961 is an equidigital number, since it uses as much as digits as its factorization.

28353961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 37.

The square root of 28353961 is about 5324.8437535762. The cubic root of 28353961 is about 304.9331072508.

The spelling of 28353961 in words is "twenty-eight million, three hundred fifty-three thousand, nine hundred sixty-one".