1205400008 has 16 divisors (see below), whose sum is σ = 2358391680. Its totient is φ = 576495568.

The previous prime is 1205399983. The next prime is 1205400013. The reversal of 1205400008 is 8000045021.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3275360 + ... + 3275727.

It is an arithmetic number, because the mean of its divisors is an integer number (147399480).

Almost surely, 2^1205400008 is an apocalyptic number.

It is an amenable number.

1205400008 is a deficient number, since it is larger than the sum of its proper divisors (1152991672).

1205400008 is a wasteful number, since it uses less digits than its factorization.

1205400008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6551116 (or 6551112 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 1205400008 is about 34718.8710645954. The cubic root of 1205400008 is about 1064.2501743686.

Adding to 1205400008 its reverse (8000045021), we get a palindrome (9205445029).

The spelling of 1205400008 in words is "one billion, two hundred five million, four hundred thousand, eight".