2978306522 has 4 divisors (see below), whose sum is σ = 4467459786. Its totient is φ = 1489153260.

The previous prime is 2978306521. The next prime is 2978306533. The reversal of 2978306522 is 2256038792.

2978306522 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2977994041 + 312481 = 54571^2 + 559^2 .

It is not an unprimeable number, because it can be changed into a prime (2978306521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 744576629 + ... + 744576632.

Almost surely, 2^2978306522 is an apocalyptic number.

2978306522 is a deficient number, since it is larger than the sum of its proper divisors (1489153264).

2978306522 is a wasteful number, since it uses less digits than its factorization.

2978306522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1489153263.

The product of its (nonzero) digits is 362880, while the sum is 44.

The square root of 2978306522 is about 54573.8629931948. The cubic root of 2978306522 is about 1438.7647782514.

The spelling of 2978306522 in words is "two billion, nine hundred seventy-eight million, three hundred six thousand, five hundred twenty-two".