28902666240 has 1040 divisors, whose sum is σ = 125593585920. Its totient is φ = 6210846720.

The previous prime is 28902666197. The next prime is 28902666257. The reversal of 28902666240 is 4266620982.

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 79 ways as a sum of consecutive naturals, for example, 220630975 + ... + 220631105.

Almost surely, 2^28902666240 is an apocalyptic number.

28902666240 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 28902666240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62796792960).

28902666240 is an abundant number, since it is smaller than the sum of its proper divisors (96690919680).

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

28902666240 is a wasteful number, since it uses less digits than its factorization.

28902666240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198 (or 167 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 45.

The spelling of 28902666240 in words is "twenty-eight billion, nine hundred two million, six hundred sixty-six thousand, two hundred forty".