48578640 has 80 divisors (see below), whose sum is σ = 164293056. Its totient is φ = 11776000.

The previous prime is 48578633. The next prime is 48578711. The reversal of 48578640 is 4687584.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 48578592 and 48578601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6561 + ... + 11840.

Almost surely, 2^48578640 is an apocalyptic number.

48578640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

48578640 is an abundant number, since it is smaller than the sum of its proper divisors (115714416).

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

48578640 is a wasteful number, since it uses less digits than its factorization.

48578640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18428 (or 18422 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 42.

The square root of 48578640 is about 6969.8378747285. The cubic root of 48578640 is about 364.8786485936.

The spelling of 48578640 in words is "forty-eight million, five hundred seventy-eight thousand, six hundred forty".