63280400 has 30 divisors (see below), whose sum is σ = 152032122. Its totient is φ = 25312000.

The previous prime is 63280381. The next prime is 63280403. The reversal of 63280400 is 408236.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 300304 + 62980096 = 548^2 + 7936^2 .

It is not an unprimeable number, because it can be changed into a prime (63280403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 78701 + ... + 79500.

Almost surely, 2^63280400 is an apocalyptic number.

It is an amenable number.

63280400 is an abundant number, since it is smaller than the sum of its proper divisors (88751722).

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

63280400 is a wasteful number, since it uses less digits than its factorization.

63280400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158219 (or 158208 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 63280400 is about 7954.8978623236. The cubic root of 63280400 is about 398.4951792186.

Adding to 63280400 its reverse (408236), we get a palindrome (63688636).

The spelling of 63280400 in words is "sixty-three million, two hundred eighty thousand, four hundred".