2528758378 has 8 divisors (see below), whose sum is σ = 3832242372. Its totient is φ = 1251344256.

The previous prime is 2528758357. The next prime is 2528758399. The reversal of 2528758378 is 8738578252.

It is an interprime number because it is at equal distance from previous prime (2528758357) and next prime (2528758399).

It can be written as a sum of positive squares in 2 ways, for example, as 2145264489 + 383493889 = 46317^2 + 19583^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6517225 + ... + 6517612.

Almost surely, 2^2528758378 is an apocalyptic number.

2528758378 is a deficient number, since it is larger than the sum of its proper divisors (1303483994).

2528758378 is a wasteful number, since it uses less digits than its factorization.

2528758378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13034936.

The product of its digits is 7526400, while the sum is 55.

The square root of 2528758378 is about 50286.7614586583. The cubic root of 2528758378 is about 1362.3931296588.

The spelling of 2528758378 in words is "two billion, five hundred twenty-eight million, seven hundred fifty-eight thousand, three hundred seventy-eight".