28744690843620 has 144 divisors (see below), whose sum is σ = 87673915929600. Its totient is φ = 7622975985408.

The previous prime is 28744690843619. The next prime is 28744690843633. The reversal of 28744690843620 is 2634809644782.

28744690843620 is a `hidden beast` number, since 2 + 8 + 7 + 446 + 90 + 8 + 43 + 62 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 38445106 + ... + 39185654.

It is an arithmetic number, because the mean of its divisors is an integer number (608846638400).

Almost surely, 2^{28744690843620} is an apocalyptic number.

28744690843620 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 28744690843620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43836957964800).

28744690843620 is an abundant number, since it is smaller than the sum of its proper divisors (58929225085980).

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

28744690843620 is a wasteful number, since it uses less digits than its factorization.

28744690843620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741754 (or 741749 counting only the distinct ones).

The product of its (nonzero) digits is 111476736, while the sum is 63.

The spelling of 28744690843620 in words is "twenty-eight trillion, seven hundred forty-four billion, six hundred ninety million, eight hundred forty-three thousand, six hundred twenty".