28770854736 has 120 divisors (see below), whose sum is σ = 80677502976. Its totient is φ = 8831047680.

The previous prime is 28770854729. The next prime is 28770854737. The reversal of 28770854736 is 63745807782.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28770854737) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3508401 + ... + 3516591.

Almost surely, 2^28770854736 is an apocalyptic number.

28770854736 is a gapful number since it is divisible by the number (26) 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 28770854736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40338751488).

28770854736 is an abundant number, since it is smaller than the sum of its proper divisors (51906648240).

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

28770854736 is a wasteful number, since it uses less digits than its factorization.

28770854736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8661 (or 8642 counting only the distinct ones).

The product of its (nonzero) digits is 15805440, while the sum is 57.

The spelling of 28770854736 in words is "twenty-eight billion, seven hundred seventy million, eight hundred fifty-four thousand, seven hundred thirty-six".