28541457 has 16 divisors (see below), whose sum is σ = 48324480. Its totient is φ = 16309296.

The previous prime is 28541437. The next prime is 28541497. The reversal of 28541457 is 75414582.

It is not a de Polignac number, because 28541457 - 2⁷ = 28541329 is a prime.

It is a super-2 number, since 2×28541457² = 1629229535365698, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28541407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75318 + ... + 75695.

It is an arithmetic number, because the mean of its divisors is an integer number (3020280).

Almost surely, 2^28541457 is an apocalyptic number.

28541457 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

28541457 is a deficient number, since it is larger than the sum of its proper divisors (19783023).

28541457 is a wasteful number, since it uses less digits than its factorization.

28541457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151029 (or 151023 counting only the distinct ones).

The product of its digits is 44800, while the sum is 36.

The square root of 28541457 is about 5342.4205188285. The cubic root of 28541457 is about 305.6037739785.

The spelling of 28541457 in words is "twenty-eight million, five hundred forty-one thousand, four hundred fifty-seven".