26478449284 has 81 divisors (see below), whose sum is σ = 55111391013. Its totient is φ = 11098942176.

The previous prime is 26478449273. The next prime is 26478449303. The reversal of 26478449284 is 48294487462.

The square root of 26478449284 is 162722.

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

It can be written as a sum of positive squares in only one way, i.e., 25943544900 + 534904384 = 161070^2 + 23128^2 .

It is a super-2 number, since 2×26478449284² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 134408274 + ... + 134408470.

Almost surely, 2^26478449284 is an apocalyptic number.

26478449284 is the 162722-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26478449284

26478449284 is an abundant number, since it is smaller than the sum of its proper divisors (28632941729).

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

26478449284 is an equidigital number, since it uses as much as digits as its factorization.

26478449284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530 (or 265 counting only the distinct ones).

The product of its digits is 24772608, while the sum is 58.

The spelling of 26478449284 in words is "twenty-six billion, four hundred seventy-eight million, four hundred forty-nine thousand, two hundred eighty-four".