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28510057 is a prime number
BaseRepresentation
bin110110011000…
…0011101101001
31222122110110001
41230300131221
524244310212
62455023001
7464221462
oct154603551
958573401
1028510057
1115103034
12966aa61
135ba2a74
143b01d69
152782657
hex1b30769

28510057 has 2 divisors, whose sum is σ = 28510058. Its totient is φ = 28510056.

The previous prime is 28510007. The next prime is 28510063. The reversal of 28510057 is 75001582.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24413481 + 4096576 = 4941^2 + 2024^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-28510057 is a prime.

It is not a weakly prime, because it can be changed into another prime (28510007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14255028 + 14255029.

It is an arithmetic number, because the mean of its divisors is an integer number (14255029).

Almost surely, 228510057 is an apocalyptic number.

It is an amenable number.

28510057 is a deficient number, since it is larger than the sum of its proper divisors (1).

28510057 is an equidigital number, since it uses as much as digits as its factorization.

28510057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2800, while the sum is 28.

The square root of 28510057 is about 5339.4809672851. The cubic root of 28510057 is about 305.4916624435.

The spelling of 28510057 in words is "twenty-eight million, five hundred ten thousand, fifty-seven".