28995408 has 100 divisors (see below), whose sum is σ = 90429108. Its totient is φ = 8916480.

The previous prime is 28995403. The next prime is 28995413. The reversal of 28995408 is 80459982.

It is an interprime number because it is at equal distance from previous prime (28995403) and next prime (28995413).

It can be written as a sum of positive squares in 2 ways, for example, as 12446784 + 16548624 = 3528^2 + 4068^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28995401) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 15988 + ... + 17708.

Almost surely, 2^28995408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28995408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45214554).

28995408 is an abundant number, since it is smaller than the sum of its proper divisors (61433700).

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

28995408 is a wasteful number, since it uses less digits than its factorization.

28995408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1754 (or 1739 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The square root of 28995408 is about 5384.7384337589. The cubic root of 28995408 is about 307.2154655300.

It can be divided in two parts, 28995 and 408, that added together give a triangular number (29403 = T₂₄₂).

The spelling of 28995408 in words is "twenty-eight million, nine hundred ninety-five thousand, four hundred eight".