28946377 has 2 divisors, whose sum is σ = 28946378. Its totient is φ = 28946376.

The previous prime is 28946363. The next prime is 28946381. The reversal of 28946377 is 77364982.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24000201 + 4946176 = 4899^2 + 2224^2 .

It is a cyclic number.

It is not a de Polignac number, because 28946377 - 2⁷ = 28946249 is a prime.

It is a super-2 number, since 2×28946377² = 1675785482852258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28946327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14473188 + 14473189.

It is an arithmetic number, because the mean of its divisors is an integer number (14473189).

Almost surely, 2^28946377 is an apocalyptic number.

It is an amenable number.

28946377 is a deficient number, since it is larger than the sum of its proper divisors (1).

28946377 is an equidigital number, since it uses as much as digits as its factorization.

28946377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 508032, while the sum is 46.

The square root of 28946377 is about 5380.1837329221. The cubic root of 28946377 is about 307.0422015429.

The spelling of 28946377 in words is "twenty-eight million, nine hundred forty-six thousand, three hundred seventy-seven".