28495140 has 48 divisors (see below), whose sum is σ = 80922240. Its totient is φ = 7490560.

The previous prime is 28495121. The next prime is 28495147. The reversal of 28495140 is 4159482.

It is not an unprimeable number, because it can be changed into a prime (28495147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 916 + ... + 7604.

It is an arithmetic number, because the mean of its divisors is an integer number (1685880).

Almost surely, 2^28495140 is an apocalyptic number.

28495140 is a gapful number since it is divisible by the number (20) 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 28495140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40461120).

28495140 is an abundant number, since it is smaller than the sum of its proper divisors (52427100).

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

28495140 is a wasteful number, since it uses less digits than its factorization.

28495140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6772 (or 6770 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 28495140 is about 5338.0839259045. The cubic root of 28495140 is about 305.4383734803.

The spelling of 28495140 in words is "twenty-eight million, four hundred ninety-five thousand, one hundred forty".