28770070560 has 768 divisors, whose sum is σ = 121335459840. Its totient is φ = 5549506560.

The previous prime is 28770070493. The next prime is 28770070577. The reversal of 28770070560 is 6507007782.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 37218334 + ... + 37219106.

It is an arithmetic number, because the mean of its divisors is an integer number (157988880).

Almost surely, 2^28770070560 is an apocalyptic number.

28770070560 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 28770070560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60667729920).

28770070560 is an abundant number, since it is smaller than the sum of its proper divisors (92565389280).

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

28770070560 is a wasteful number, since it uses less digits than its factorization.

28770070560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 881 (or 873 counting only the distinct ones).

The product of its (nonzero) digits is 164640, while the sum is 42.

The spelling of 28770070560 in words is "twenty-eight billion, seven hundred seventy million, seventy thousand, five hundred sixty".