48000000 has 154 divisors (see below), whose sum is σ = 159919828. Its totient is φ = 12800000.

The previous prime is 47999969. The next prime is 48000013. The reversal of 48000000 is 84.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a self number, because there is not a number n which added to its sum of digits gives 48000000.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 9599998 + ... + 9600002.

Almost surely, 2^48000000 is an apocalyptic number.

48000000 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 48000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79959914).

48000000 is an abundant number, since it is smaller than the sum of its proper divisors (111919828).

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

48000000 is an frugal number, since it uses more digits than its factorization.

48000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53 (or 10 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 48000000 is about 6928.2032302755. The cubic root of 48000000 is about 363.4241185664.

Multiplying 48000000 by its sum of digits (12), we get a square (576000000 = 24000²).

48000000 divided by its sum of digits (12) gives a square (4000000 = 2000²).

Adding to 48000000 its reverse (84), we get a palindrome (48000084).

The spelling of 48000000 in words is "forty-eight million", and thus it is an aban number and an uban number.