28076437450780 has 48 divisors (see below), whose sum is σ = 59159158692480. Its totient is φ = 11192791680000.

The previous prime is 28076437450753. The next prime is 28076437450823. The reversal of 28076437450780 is 8705473467082.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6843405 + ... + 10148155.

It is an arithmetic number, because the mean of its divisors is an integer number (1232482472760).

Almost surely, 2^{28076437450780} is an apocalyptic number.

28076437450780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28076437450780 is an abundant number, since it is smaller than the sum of its proper divisors (31082721241700).

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

28076437450780 is a wasteful number, since it uses less digits than its factorization.

28076437450780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3306190 (or 3306188 counting only the distinct ones).

The product of its (nonzero) digits is 63221760, while the sum is 61.

The spelling of 28076437450780 in words is "twenty-eight trillion, seventy-six billion, four hundred thirty-seven million, four hundred fifty thousand, seven hundred eighty".