48648978 has 64 divisors (see below), whose sum is σ = 124416000. Its totient is φ = 13802832.

The previous prime is 48648967. The next prime is 48648991. The reversal of 48648978 is 87984684.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a nialpdrome in base 14.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67303 + ... + 68021.

It is an arithmetic number, because the mean of its divisors is an integer number (1944000).

Almost surely, 2^48648978 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 48648978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62208000).

48648978 is an abundant number, since it is smaller than the sum of its proper divisors (75767022).

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

48648978 is a wasteful number, since it uses less digits than its factorization.

48648978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 916 (or 910 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 54.

The square root of 48648978 is about 6974.8819344846. The cubic root of 48648978 is about 365.0546687365.

The spelling of 48648978 in words is "forty-eight million, six hundred forty-eight thousand, nine hundred seventy-eight".