4248640 has 112 divisors (see below), whose sum is σ = 11850624. Its totient is φ = 1433600.

The previous prime is 4248631. The next prime is 4248661. The reversal of 4248640 is 468424.

It is an Ulam number.

It is a d-powerful number, because it can be written as 4⁵ + 2¹¹ + 4⁶ + 8³ + 6⁶ + 4¹¹ + 0 .

It is a junction number, because it is equal to n+sod(n) for n = 4248599 and 4248608.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59805 + ... + 59875.

Almost surely, 2^4248640 is an apocalyptic number.

4248640 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 4248640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5925312).

4248640 is an abundant number, since it is smaller than the sum of its proper divisors (7601984).

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

4248640 is a wasteful number, since it uses less digits than its factorization.

4248640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116 (or 106 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

The square root of 4248640 is about 2061.2229379667. Note that the first 3 decimals coincide. The cubic root of 4248640 is about 161.9633102910.

The spelling of 4248640 in words is "four million, two hundred forty-eight thousand, six hundred forty".