28475001 has 12 divisors (see below), whose sum is σ = 41193828. Its totient is φ = 18954144.

The previous prime is 28474981. The next prime is 28475009. The reversal of 28475001 is 10057482.

It can be written as a sum of positive squares in 2 ways, for example, as 6007401 + 22467600 = 2451^2 + 4740^2 .

It is not a de Polignac number, because 28475001 - 2⁹ = 28474489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28475009) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4911 + ... + 9003.

It is an arithmetic number, because the mean of its divisors is an integer number (3432819).

Almost surely, 2^28475001 is an apocalyptic number.

It is an amenable number.

28475001 is a deficient number, since it is larger than the sum of its proper divisors (12718827).

28475001 is a wasteful number, since it uses less digits than its factorization.

28475001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4872 (or 4869 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 28475001 is about 5336.1972414820. The cubic root of 28475001 is about 305.3664001180.

The spelling of 28475001 in words is "twenty-eight million, four hundred seventy-five thousand, one".