28379490379680 has 384 divisors, whose sum is σ = 105009021250560. Its totient is φ = 6365427875840.

The previous prime is 28379490379673. The next prime is 28379490379711. The reversal of 28379490379680 is 8697309497382.

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, 2616427 + ... + 7975253.

It is an arithmetic number, because the mean of its divisors is an integer number (273460992840).

Almost surely, 2^{28379490379680} is an apocalyptic number.

28379490379680 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 28379490379680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52504510625280).

28379490379680 is an abundant number, since it is smaller than the sum of its proper divisors (76629530870880).

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

28379490379680 is a wasteful number, since it uses less digits than its factorization.

28379490379680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5358932 (or 5358924 counting only the distinct ones).

The product of its (nonzero) digits is 987614208, while the sum is 75.

The spelling of 28379490379680 in words is "twenty-eight trillion, three hundred seventy-nine billion, four hundred ninety million, three hundred seventy-nine thousand, six hundred eighty".