28019835480 has 256 divisors, whose sum is σ = 103660462080. Its totient is φ = 5900304384.

The previous prime is 28019835449. The next prime is 28019835509. The reversal of 28019835480 is 8453891082.

It is a super-2 number, since 2×28019835480² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

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, 6298617 + ... + 6303063.

It is an arithmetic number, because the mean of its divisors is an integer number (404923680).

Almost surely, 2^28019835480 is an apocalyptic number.

28019835480 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 28019835480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51830231040).

28019835480 is an abundant number, since it is smaller than the sum of its proper divisors (75640626600).

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

28019835480 is a wasteful number, since it uses less digits than its factorization.

28019835480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5058 (or 5054 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 48.

The spelling of 28019835480 in words is "twenty-eight billion, nineteen million, eight hundred thirty-five thousand, four hundred eighty".