48217640 has 32 divisors (see below), whose sum is σ = 111139560. Its totient is φ = 18816000.

The previous prime is 48217639. The next prime is 48217643. The reversal of 48217640 is 4671284.

It can be written as a sum of positive squares in 4 ways, for example, as 15476356 + 32741284 = 3934^2 + 5722^2 .

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 48217597 and 48217606.

It is not an unprimeable number, because it can be changed into a prime (48217643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13061 + ... + 16340.

Almost surely, 2^48217640 is an apocalyptic number.

48217640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

48217640 is an abundant number, since it is smaller than the sum of its proper divisors (62921920).

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

48217640 is a wasteful number, since it uses less digits than its factorization.

48217640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29453 (or 29449 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 48217640 is about 6943.8922802705. The cubic root of 48217640 is about 363.9725656577.

The spelling of 48217640 in words is "forty-eight million, two hundred seventeen thousand, six hundred forty".