4619640 has 64 divisors (see below), whose sum is σ = 14009760. Its totient is φ = 1218560.

The previous prime is 4619627. The next prime is 4619647. The reversal of 4619640 is 469164.

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 = 4619598 and 4619607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4619647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16300 + ... + 16580.

Almost surely, 2^4619640 is an apocalyptic number.

4619640 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 4619640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7004880).

4619640 is an abundant number, since it is smaller than the sum of its proper divisors (9390120).

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

4619640 is a wasteful number, since it uses less digits than its factorization.

4619640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432 (or 428 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 4619640 is about 2149.3347808101. The cubic root of 4619640 is about 166.5467047867.

It can be divided in two parts, 461 and 9640, that added together give a palindrome (10101).

The spelling of 4619640 in words is "four million, six hundred nineteen thousand, six hundred forty".