2523402378 has 48 divisors (see below), whose sum is σ = 6615984960. Its totient is φ = 678561408.

The previous prime is 2523402377. The next prime is 2523402389. The reversal of 2523402378 is 8732043252.

2523402378 is a `hidden beast` number, since 2 + 523 + 40 + 23 + 78 = 666.

It is a super-2 number, since 2×2523402378² = 12735119122592109768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2523402373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 586888 + ... + 591171.

It is an arithmetic number, because the mean of its divisors is an integer number (137833020).

Almost surely, 2^2523402378 is an apocalyptic number.

2523402378 is an abundant number, since it is smaller than the sum of its proper divisors (4092582582).

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

2523402378 is a wasteful number, since it uses less digits than its factorization.

2523402378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1178091 (or 1178088 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 36.

The square root of 2523402378 is about 50233.4786571665. The cubic root of 2523402378 is about 1361.4305841016.

The spelling of 2523402378 in words is "two billion, five hundred twenty-three million, four hundred two thousand, three hundred seventy-eight".