602189640 has 480 divisors, whose sum is σ = 2390267880. Its totient is φ = 134701056.

The previous prime is 602189639. The next prime is 602189641. The reversal of 602189640 is 46981206.

602189640 is a `hidden beast` number, since 6 + 0 + 2 + 1 + 8 + 9 + 640 = 666.

602189640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (602189639) and next prime (602189641).

It can be written as a sum of positive squares in 12 ways, for example, as 52099524 + 550090116 = 7218^2 + 23454^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 602189595 and 602189604.

It is not an unprimeable number, because it can be changed into a prime (602189641) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 20765146 + ... + 20765174.

Almost surely, 2^602189640 is an apocalyptic number.

602189640 is a gapful number since it is divisible by the number (60) 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 602189640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1195133940).

602189640 is an abundant number, since it is smaller than the sum of its proper divisors (1788078240).

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

602189640 is a wasteful number, since it uses less digits than its factorization.

602189640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111 (or 69 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 602189640 is about 24539.5525631581. The cubic root of 602189640 is about 844.4574274448.

The spelling of 602189640 in words is "six hundred two million, one hundred eighty-nine thousand, six hundred forty".