28457535 has 32 divisors (see below), whose sum is σ = 49489920. Its totient is φ = 13910400.

The previous prime is 28457531. The next prime is 28457543. The reversal of 28457535 is 53575482.

It is not a de Polignac number, because 28457535 - 2² = 28457531 is a prime.

It is a super-3 number, since 3×28457535³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28457493 and 28457502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28457531) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7225 + ... + 10445.

It is an arithmetic number, because the mean of its divisors is an integer number (1546560).

Almost surely, 2^28457535 is an apocalyptic number.

28457535 is a deficient number, since it is larger than the sum of its proper divisors (21032385).

28457535 is a wasteful number, since it uses less digits than its factorization.

28457535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3279.

The product of its digits is 168000, while the sum is 39.

The square root of 28457535 is about 5334.5604317507. The cubic root of 28457535 is about 305.3039521201.

The spelling of 28457535 in words is "twenty-eight million, four hundred fifty-seven thousand, five hundred thirty-five".