28001263480 has 32 divisors (see below), whose sum is σ = 63008421840. Its totient is φ = 11199513600.

The previous prime is 28001263463. The next prime is 28001263483. The reversal of 28001263480 is 8436210082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28001263483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 570472 + ... + 617608.

Almost surely, 2^28001263480 is an apocalyptic number.

28001263480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28001263480 is an abundant number, since it is smaller than the sum of its proper divisors (35007158360).

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

28001263480 is a wasteful number, since it uses less digits than its factorization.

28001263480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61999 (or 61995 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The spelling of 28001263480 in words is "twenty-eight billion, one million, two hundred sixty-three thousand, four hundred eighty".