263378780 has 24 divisors (see below), whose sum is σ = 632109408. Its totient is φ = 90301248.

The previous prime is 263378767. The next prime is 263378803. The reversal of 263378780 is 87873362.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 940499 + ... + 940778.

It is an arithmetic number, because the mean of its divisors is an integer number (26337892).

Almost surely, 2^263378780 is an apocalyptic number.

263378780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

263378780 is an abundant number, since it is smaller than the sum of its proper divisors (368730628).

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

263378780 is a wasteful number, since it uses less digits than its factorization.

263378780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1881293 (or 1881291 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 44.

The square root of 263378780 is about 16228.9488260947. The cubic root of 263378780 is about 641.0032929073.

The spelling of 263378780 in words is "two hundred sixty-three million, three hundred seventy-eight thousand, seven hundred eighty".