28453653 has 16 divisors (see below), whose sum is σ = 42288960. Its totient is φ = 18908208.

The previous prime is 28453637. The next prime is 28453673. The reversal of 28453653 is 35635482.

It is a happy number.

It is not a de Polignac number, because 28453653 - 2⁴ = 28453637 is a prime.

It is a super-2 number, since 2×28453653² = 1619220738088818, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28453673) 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, 7851 + ... + 10887.

It is an arithmetic number, because the mean of its divisors is an integer number (2643060).

Almost surely, 2^28453653 is an apocalyptic number.

It is an amenable number.

28453653 is a deficient number, since it is larger than the sum of its proper divisors (13835307).

28453653 is a wasteful number, since it uses less digits than its factorization.

28453653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3393 (or 3387 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 28453653 is about 5334.1965655570. The cubic root of 28453653 is about 305.2900689331.

The spelling of 28453653 in words is "twenty-eight million, four hundred fifty-three thousand, six hundred fifty-three".