28025535 has 32 divisors (see below), whose sum is σ = 46157760. Its totient is φ = 14515200.

The previous prime is 28025533. The next prime is 28025561. The reversal of 28025535 is 53552082.

It is not a de Polignac number, because 28025535 - 2¹ = 28025533 is a prime.

It is a super-2 number, since 2×28025535² = 1570861224072450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28025533) 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, 99595 + ... + 99875.

It is an arithmetic number, because the mean of its divisors is an integer number (1442430).

Almost surely, 2^28025535 is an apocalyptic number.

28025535 is a deficient number, since it is larger than the sum of its proper divisors (18132225).

28025535 is a wasteful number, since it uses less digits than its factorization.

28025535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459.

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 28025535 is about 5293.9149029806. The cubic root of 28025535 is about 303.7511778308.

The spelling of 28025535 in words is "twenty-eight million, twenty-five thousand, five hundred thirty-five".