48578440 has 64 divisors (see below), whose sum is σ = 117936000. Its totient is φ = 17948160.

The previous prime is 48578429. The next prime is 48578449. The reversal of 48578440 is 4487584.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 48578393 and 48578402.

It is not an unprimeable number, because it can be changed into a prime (48578449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30381 + ... + 31939.

It is an arithmetic number, because the mean of its divisors is an integer number (1842750).

Almost surely, 2^48578440 is an apocalyptic number.

48578440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 48578440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58968000).

48578440 is an abundant number, since it is smaller than the sum of its proper divisors (69357560).

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

48578440 is a wasteful number, since it uses less digits than its factorization.

48578440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1630 (or 1626 counting only the distinct ones).

The product of its (nonzero) digits is 143360, while the sum is 40.

The square root of 48578440 is about 6969.8235271777. The cubic root of 48578440 is about 364.8781478534.

48578440 divided by its sum of digits (40) gives a triangular number (1214461 = T₁₅₅₈).

The spelling of 48578440 in words is "forty-eight million, five hundred seventy-eight thousand, four hundred forty".