263425820 has 48 divisors (see below), whose sum is σ = 647656128. Its totient is φ = 88112640.

The previous prime is 263425819. The next prime is 263425873. The reversal of 263425820 is 28524362.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17207 + ... + 28686.

It is an arithmetic number, because the mean of its divisors is an integer number (13492836).

Almost surely, 2^263425820 is an apocalyptic number.

263425820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

263425820 is an abundant number, since it is smaller than the sum of its proper divisors (384230308).

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

263425820 is a wasteful number, since it uses less digits than its factorization.

263425820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45950 (or 45948 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 263425820 is about 16230.3980234620. The cubic root of 263425820 is about 641.0414521444.

The spelling of 263425820 in words is "two hundred sixty-three million, four hundred twenty-five thousand, eight hundred twenty".