28841279040 has 448 divisors, whose sum is σ = 120039505920. Its totient is φ = 6379223040.

The previous prime is 28841279039. The next prime is 28841279063. The reversal of 28841279040 is 4097214882.

It is a tau number, because it is divible by the number of its divisors (448).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1867189 + ... + 1882571.

Almost surely, 2^28841279040 is an apocalyptic number.

28841279040 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 28841279040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60019752960).

28841279040 is an abundant number, since it is smaller than the sum of its proper divisors (91198226880).

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

28841279040 is a wasteful number, since it uses less digits than its factorization.

28841279040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15447 (or 15431 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The spelling of 28841279040 in words is "twenty-eight billion, eight hundred forty-one million, two hundred seventy-nine thousand, forty".