28619525477284 has 135 divisors (see below), whose sum is σ = 59262775767531. Its totient is φ = 12092725597680.

The previous prime is 28619525477281. The next prime is 28619525477321. The reversal of 28619525477284 is 48277452591682.

The square root of 28619525477284 is 5349722.

It is a perfect power (a square), and thus also a powerful number.

It is not an unprimeable number, because it can be changed into a prime (28619525477281) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 41417547379 + ... + 41417548069.

Almost surely, 2^{28619525477284} is an apocalyptic number.

28619525477284 is the 5349722-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28619525477284

28619525477284 is an abundant number, since it is smaller than the sum of its proper divisors (30643250290247).

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

28619525477284 is an frugal number, since it uses more digits than its factorization.

28619525477284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1572 (or 779 counting only the distinct ones).

The product of its digits is 541900800, while the sum is 70.

The spelling of 28619525477284 in words is "twenty-eight trillion, six hundred nineteen billion, five hundred twenty-five million, four hundred seventy-seven thousand, two hundred eighty-four".