28710090215040 has 512 divisors, whose sum is σ = 101866617619200. Its totient is φ = 6833405952000.

The previous prime is 28710090215029. The next prime is 28710090215063. The reversal of 28710090215040 is 4051209001782.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 28710090215040.

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, 89671240 + ... + 89990840.

Almost surely, 2^{28710090215040} is an apocalyptic number.

28710090215040 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 28710090215040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50933308809600).

28710090215040 is an abundant number, since it is smaller than the sum of its proper divisors (73156527404160).

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

28710090215040 is a wasteful number, since it uses less digits than its factorization.

28710090215040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319756 (or 319744 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 39.

The spelling of 28710090215040 in words is "twenty-eight trillion, seven hundred ten billion, ninety million, two hundred fifteen thousand, forty".