48311440 has 20 divisors (see below), whose sum is σ = 112324284. Its totient is φ = 19324544.

The previous prime is 48311437. The next prime is 48311447. The reversal of 48311440 is 4411384.

It can be written as a sum of positive squares in 2 ways, for example, as 13454224 + 34857216 = 3668^2 + 5904^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (48311447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 301867 + ... + 302026.

Almost surely, 2^48311440 is an apocalyptic number.

48311440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

48311440 is an abundant number, since it is smaller than the sum of its proper divisors (64012844).

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

48311440 is a wasteful number, since it uses less digits than its factorization.

48311440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603906 (or 603900 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 48311440 is about 6950.6431357105. The cubic root of 48311440 is about 364.2084303198.

The spelling of 48311440 in words is "forty-eight million, three hundred eleven thousand, four hundred forty".