28464577 has 2 divisors, whose sum is σ = 28464578. Its totient is φ = 28464576.

The previous prime is 28464529. The next prime is 28464617. The reversal of 28464577 is 77546482.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25492401 + 2972176 = 5049^2 + 1724^2 .

It is a cyclic number.

It is not a de Polignac number, because 28464577 - 2¹¹ = 28462529 is a prime.

It is not a weakly prime, because it can be changed into another prime (28464077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14232288 + 14232289.

It is an arithmetic number, because the mean of its divisors is an integer number (14232289).

Almost surely, 2^28464577 is an apocalyptic number.

It is an amenable number.

28464577 is a deficient number, since it is larger than the sum of its proper divisors (1).

28464577 is an equidigital number, since it uses as much as digits as its factorization.

28464577 is an evil number, because the sum of its binary digits is even.

The product of its digits is 376320, while the sum is 43.

The square root of 28464577 is about 5335.2204265616. The cubic root of 28464577 is about 305.3291331851.

The spelling of 28464577 in words is "twenty-eight million, four hundred sixty-four thousand, five hundred seventy-seven".