28597408 has 48 divisors (see below), whose sum is σ = 65862720. Its totient is φ = 11966976.

The previous prime is 28597399. The next prime is 28597423. The reversal of 28597408 is 80479582.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8148 + ... + 11116.

It is an arithmetic number, because the mean of its divisors is an integer number (1372140).

Almost surely, 2^28597408 is an apocalyptic number.

28597408 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28597408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32931360).

28597408 is an abundant number, since it is smaller than the sum of its proper divisors (37265312).

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

28597408 is a wasteful number, since it uses less digits than its factorization.

28597408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3029 (or 3021 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 43.

The square root of 28597408 is about 5347.6544390976. The cubic root of 28597408 is about 305.8033395405.

The spelling of 28597408 in words is "twenty-eight million, five hundred ninety-seven thousand, four hundred eight".