1002206340 has 72 divisors (see below), whose sum is σ = 3043168128. Its totient is φ = 266978880.

The previous prime is 1002206327. The next prime is 1002206351. The reversal of 1002206340 is 436022001.

It is a happy number.

1002206340 is a `hidden beast` number, since 10 + 0 + 2 + 20 + 634 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 219319 + ... + 223841.

It is an arithmetic number, because the mean of its divisors is an integer number (42266224).

Almost surely, 2^1002206340 is an apocalyptic number.

1002206340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1002206340 is an abundant number, since it is smaller than the sum of its proper divisors (2040961788).

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

1002206340 is a wasteful number, since it uses less digits than its factorization.

1002206340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5769 (or 5764 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1002206340 is about 31657.6426791383. The cubic root of 1002206340 is about 1000.7349064469.

Adding to 1002206340 its reverse (436022001), we get a palindrome (1438228341).

The spelling of 1002206340 in words is "one billion, two million, two hundred six thousand, three hundred forty".