263146980 has 24 divisors (see below), whose sum is σ = 736811712. Its totient is φ = 70172512.

The previous prime is 263146909. The next prime is 263146981. The reversal of 263146980 is 89641362.

It is not an unprimeable number, because it can be changed into a prime (263146981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2192832 + ... + 2192951.

It is an arithmetic number, because the mean of its divisors is an integer number (30700488).

Almost surely, 2^263146980 is an apocalyptic number.

263146980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

263146980 is an abundant number, since it is smaller than the sum of its proper divisors (473664732).

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

263146980 is a wasteful number, since it uses less digits than its factorization.

263146980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4385795 (or 4385793 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 263146980 is about 16221.8056948048. The cubic root of 263146980 is about 640.8151884411.

The spelling of 263146980 in words is "two hundred sixty-three million, one hundred forty-six thousand, nine hundred eighty".