4358640 has 160 divisors (see below), whose sum is σ = 15998976. Its totient is φ = 967680.

The previous prime is 4358621. The next prime is 4358659. The reversal of 4358640 is 468534.

It is an interprime number because it is at equal distance from previous prime (4358621) and next prime (4358659).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 4358598 and 4358607.

It is a congruent number.

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, 34257 + ... + 34383.

Almost surely, 2^4358640 is an apocalyptic number.

4358640 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 4358640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7999488).

4358640 is an abundant number, since it is smaller than the sum of its proper divisors (11640336).

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

4358640 is a wasteful number, since it uses less digits than its factorization.

4358640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167 (or 161 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 4358640 is about 2087.7356154456. The cubic root of 4358640 is about 163.3491955533.

The spelling of 4358640 in words is "four million, three hundred fifty-eight thousand, six hundred forty".