2628978282 has 120 divisors (see below), whose sum is σ = 7213710240. Its totient is φ = 711562320.

The previous prime is 2628978241. The next prime is 2628978299. The reversal of 2628978282 is 2828798262.

2628978282 is a `hidden beast` number, since 2 + 628 + 9 + 7 + 8 + 2 + 8 + 2 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 142107 + ... + 159537.

It is an arithmetic number, because the mean of its divisors is an integer number (60114252).

Almost surely, 2^2628978282 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2628978282, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3606855120).

2628978282 is an abundant number, since it is smaller than the sum of its proper divisors (4584731958).

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

2628978282 is a wasteful number, since it uses less digits than its factorization.

2628978282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17478 (or 17462 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 54.

The square root of 2628978282 is about 51273.5631880602. The cubic root of 2628978282 is about 1380.1586112588.

The spelling of 2628978282 in words is "two billion, six hundred twenty-eight million, nine hundred seventy-eight thousand, two hundred eighty-two".