63121280 has 32 divisors (see below), whose sum is σ = 150900840. Its totient is φ = 25248256.

The previous prime is 63121277. The next prime is 63121309. The reversal of 63121280 is 8212136.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 48674 + ... + 49953.

Almost surely, 2^63121280 is an apocalyptic number.

It is an amenable number.

63121280 is an abundant number, since it is smaller than the sum of its proper divisors (87779560).

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

63121280 is an equidigital number, since it uses as much as digits as its factorization.

63121280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98646 (or 98634 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 63121280 is about 7944.8901817457. The cubic root of 63121280 is about 398.1608904831.

The spelling of 63121280 in words is "sixty-three million, one hundred twenty-one thousand, two hundred eighty".