263478480 has 80 divisors (see below), whose sum is σ = 838886784. Its totient is φ = 68359680.

The previous prime is 263478473. The next prime is 263478511. The reversal of 263478480 is 84874362.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×263478480² = 138841818846220800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5956 + ... + 23715.

Almost surely, 2^263478480 is an apocalyptic number.

263478480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

263478480 is an abundant number, since it is smaller than the sum of its proper divisors (575408304).

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

263478480 is a wasteful number, since it uses less digits than its factorization.

263478480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29724 (or 29718 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 42.

The square root of 263478480 is about 16232.0202069859. The cubic root of 263478480 is about 641.0841649832.

The spelling of 263478480 in words is "two hundred sixty-three million, four hundred seventy-eight thousand, four hundred eighty".