28906488 has 96 divisors (see below), whose sum is σ = 85503600. Its totient is φ = 8769024.

The previous prime is 28906483. The next prime is 28906523. The reversal of 28906488 is 88460982.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28906481) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 83131 + ... + 83477.

Almost surely, 2^28906488 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 28906488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42751800).

28906488 is an abundant number, since it is smaller than the sum of its proper divisors (56597112).

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

28906488 is a wasteful number, since it uses less digits than its factorization.

28906488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461 (or 454 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The square root of 28906488 is about 5376.4754254065. The cubic root of 28906488 is about 306.9010988349.

The spelling of 28906488 in words is "twenty-eight million, nine hundred six thousand, four hundred eighty-eight".