28553534 has 24 divisors (see below), whose sum is σ = 45826128. Its totient is φ = 13317920.

The previous prime is 28553521. The next prime is 28553549. The reversal of 28553534 is 43535582.

Its product of digits (72000) is a multiple of the sum of its prime factors (400).

It is a junction number, because it is equal to n+sod(n) for n = 28553494 and 28553503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 101474 + ... + 101754.

It is an arithmetic number, because the mean of its divisors is an integer number (1909422).

Almost surely, 2^28553534 is an apocalyptic number.

28553534 is a deficient number, since it is larger than the sum of its proper divisors (17272594).

28553534 is a wasteful number, since it uses less digits than its factorization.

28553534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400 (or 353 counting only the distinct ones).

The product of its digits is 72000, while the sum is 35.

The square root of 28553534 is about 5343.5506921896. The cubic root of 28553534 is about 305.6468721792.

The spelling of 28553534 in words is "twenty-eight million, five hundred fifty-three thousand, five hundred thirty-four".