63280478 has 4 divisors (see below), whose sum is σ = 94920720. Its totient is φ = 31640238.

The previous prime is 63280457. The next prime is 63280499. The reversal of 63280478 is 87408236.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (63280457) and next prime (63280499).

It is a super-3 number, since 3×63280478³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15820118 + ... + 15820121.

It is an arithmetic number, because the mean of its divisors is an integer number (23730180).

Almost surely, 2^63280478 is an apocalyptic number.

63280478 is a deficient number, since it is larger than the sum of its proper divisors (31640242).

63280478 is a wasteful number, since it uses less digits than its factorization.

63280478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31640241.

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 63280478 is about 7954.9027649620. The cubic root of 63280478 is about 398.4953429482.

The spelling of 63280478 in words is "sixty-three million, two hundred eighty thousand, four hundred seventy-eight".