28597448 has 32 divisors (see below), whose sum is σ = 60082560. Its totient is φ = 12646080.

The previous prime is 28597427. The next prime is 28597493. The reversal of 28597448 is 84479582.

It is a happy number.

It is a super-2 number, since 2×28597448² = 1635628064225408, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1136 + ... + 7647.

It is an arithmetic number, because the mean of its divisors is an integer number (1877580).

Almost surely, 2^28597448 is an apocalyptic number.

It is an amenable number.

28597448 is an abundant number, since it is smaller than the sum of its proper divisors (31485112).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28597448 is a wasteful number, since it uses less digits than its factorization.

28597448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8837 (or 8833 counting only the distinct ones).

The product of its digits is 645120, while the sum is 47.

The square root of 28597448 is about 5347.6581790537. The cubic root of 28597448 is about 305.8034821190.

The spelling of 28597448 in words is "twenty-eight million, five hundred ninety-seven thousand, four hundred forty-eight".