28378090104 has 96 divisors (see below), whose sum is σ = 88876483920. Its totient is φ = 7484327424.

The previous prime is 28378090093. The next prime is 28378090127. The reversal of 28378090104 is 40109087382.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 912829 + ... + 943404.

Almost surely, 2^28378090104 is an apocalyptic number.

28378090104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28378090104 is an abundant number, since it is smaller than the sum of its proper divisors (60498393816).

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

28378090104 is a wasteful number, since it uses less digits than its factorization.

28378090104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1856269 (or 1856258 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The spelling of 28378090104 in words is "twenty-eight billion, three hundred seventy-eight million, ninety thousand, one hundred four".