2523673640 has 16 divisors (see below), whose sum is σ = 5678265780. Its totient is φ = 1009469440.

The previous prime is 2523673627. The next prime is 2523673667. The reversal of 2523673640 is 463763252.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2476256644 + 47416996 = 49762^2 + 6886^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2523673594 and 2523673603.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31545881 + ... + 31545960.

Almost surely, 2^2523673640 is an apocalyptic number.

2523673640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2523673640 is an abundant number, since it is smaller than the sum of its proper divisors (3154592140).

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

2523673640 is a wasteful number, since it uses less digits than its factorization.

2523673640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63091852 (or 63091848 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 38.

The square root of 2523673640 is about 50236.1785967046. The cubic root of 2523673640 is about 1361.4793662742.

The spelling of 2523673640 in words is "two billion, five hundred twenty-three million, six hundred seventy-three thousand, six hundred forty".