48815640 has 48 divisors (see below), whose sum is σ = 158652000. Its totient is φ = 13017408.

The previous prime is 48815639. The next prime is 48815659. The reversal of 48815640 is 4651884.

48815640 is a `hidden beast` number, since 4 + 8 + 8 + 1 + 5 + 640 = 666.

48815640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 48815595 and 48815604.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 67440 + ... + 68159.

It is an arithmetic number, because the mean of its divisors is an integer number (3305250).

Almost surely, 2^48815640 is an apocalyptic number.

48815640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

48815640 is an abundant number, since it is smaller than the sum of its proper divisors (109836360).

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

48815640 is a wasteful number, since it uses less digits than its factorization.

48815640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135616 (or 135609 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 48815640 is about 6986.8190186951. The cubic root of 48815640 is about 365.4710625260.

It can be divided in two parts, 48815 and 640, that added together give a triangular number (49455 = T₃₁₄).

The spelling of 48815640 in words is "forty-eight million, eight hundred fifteen thousand, six hundred forty".